World Library  
Flag as Inappropriate
Email this Article

55 (number)

Article Id: WHEBN0000399156
Reproduction Date:

Title: 55 (number)  
Author: World Heritage Encyclopedia
Language: English
Subject: 5 (number), Prime factor exponent notation, 495 (number), 420 (number), 801 (number)
Collection: Integers
Publisher: World Heritage Encyclopedia
Publication
Date:
 

55 (number)

54 55 56
Cardinal fifty-five
Ordinal 55th
(fifty-fifth)
Factorization 5 × 11
Divisors 1, 5, 11, 55
Roman numeral LV
Binary 1101112
Ternary 20013
Quaternary 3134
Quinary 2105
Senary 1316
Octal 678
Duodecimal 4712
Hexadecimal 3716
Vigesimal 2F20
Base 36 1J36

55 (fifty-five) is the natural number following 54 and preceding 56.

Contents

  • Mathematics 1
  • Science 2
    • Astronomy 2.1
  • Music 3
  • Transportation 4
  • Film 5
  • Years 6
  • Other uses 7
  • See also 8

Mathematics

55 is the 10th Fibonacci number and a triangular number (the sum of the numbers 1 to 10). It is the largest Fibonacci number to also be a triangular number.

It is a square pyramidal number (the sum of the squares of the integers 1 to 5) as well as a heptagonal number, and a centered nonagonal number.

In base 10, it is a Kaprekar number.

55 is a semiprime, being the product of 5 and 11 and it is the 2nd member of the (5.q) semiprime family. 55 is one of only two integers with an aliquot sum of 17 (the other being 39). 55 has an aliquot sequence of 4 members: (55, 17, 1, 0).

55 is also the sum of consecutive numbers from 1 to 10.

Science

Astronomy

Music

  • A song produced by Group X was called "Schfifty Five".
  • The name of a song by British Indie Rock Band Kasabian. The song was released as a B side to Club Foot and was recorded live when the band performed at London's Brixton Academy.
  • I Can't Drive 55, a song by Sammy Hagar
  • Ol' '55, a song by Tom Waits
  • Cristian Vogel released an album in 2005 with the title "Station 55"
  • Ol' 55 (band), an Australian rock band.
  • Primer 55 an American band
  • 55 Cadillac, an album by Andrew W.K.

Transportation

Film

Years

Other uses

See also

This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and USA.gov, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for USA.gov and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
 
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
 
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.
 


Copyright © World Library Foundation. All rights reserved. eBooks from Project Gutenberg are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.