54 (number)

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54 (fifty-four) is the natural number following 53 and preceding 55.

Contents 1 In mathematics 2 In science 2.1 Astronomy 3 In sports 4 In other fields 5 Historical years

[edit] In mathematics

54 is a 19-gonal number. Twice the third power of three, 54 is a Leyland number. 54 can be written as the sum of three squares in three different ways: 7² + 2² + 1² = 6² + 2(3²) = 2(5²) + 2² = 54. It is the smallest number with this property. Like all other multiples of 6, it is a semiperfect number.

In base 10 it is a Harshad number.

[edit] In science

• The atomic number of xenon

[edit] Astronomy

• Messier object M54, a magnitude 8.5 globular cluster in the constellation Sagittarius

• The New General Catalogue object NGC 54, a spiral galaxy in the constellation Cetus

• The Saros number of the solar eclipse series which began on -1284 July 25 and ended on 32 September 3. The duration of Saros series 54 was 1316.2 years, and it contained 74 solar eclipses.

• The Saros number of the lunar eclipse series which began on -964 May 14 and ended on 334 July 3. The duration of Saros series 54 was 1298.1 years, and it contained 73 lunar eclipses.

[edit] In sports

• The jersey number of Los Angeles Lakers' Kwame Brown
• The jersey number of Chicago Bears' middle linebacker Brian Urlacher
• The jersey number of John Cena's Chaingang Soldier
• For years car number 54 was NASCAR driver Lennie Pond

[edit] In other fields

Fifty-four is:

• The code for international direct dial phone calls to Argentina
• 54, a 1998 movie about Studio 54 starring Salma Hayek and Ryan Phillippe
• 54, a novel by the Wu Ming collective of authors
• The number of colored squares on a Rubik's cube
• In the title of a 1960s television show Car 54, Where Are You?
• The code for the French Département of Meurthe-et-Moselle
• The answer to 6 times 9 which according to The Hitchhikers Guide To The Galaxy is the question to life the universe and everything
• 54 is the number on the tag worn by Boss Skua in the film Happy Feet. It was given to him by "Aliens" (Human beings).

[edit] Historical years

54 A.D., 54 B.C., 1954, 2054, etc.