56 (number)

56 (fifty-six) is the natural number following 55 and preceding 57.

Template:Numbers 50s
Cardinal	56 fifty-six
Ordinal	56th fifty-sixth
Factorization	${\displaystyle 2^{3}\cdot 7}$
Divisors	2, 4, 7, 8, 14, 28
Roman numeral	LVI
Binary	111000
Hexadecimal	38

56 is the sum of the first six triangular numbers (making it a tetrahedral number), as well as the sum of six consecutive primes (3 + 5 + 7 + 11 + 13 + 17). It is also a tetranacci number and a pronic number. Adding up the divisors of 1 through 8 gives 56.

The maximum determinant in an 8 by 8 matrix of zeroes and ones is 56.

• The atomic number of barium

• Messier object M56, a magnitude 9.5 globular cluster in the constellation Lyra

• The New General Catalogue object NGC 56, an unverified object in the constellation Pisces. NGC 76 does not appear to be a real object.

• The Saros number of the solar eclipse series which began on -1172 July 17 and ended on 144 September 15. The duration of Saros series 56 was 1316.2 years, and it contained 74 solar eclipses.

• The Saros number of the lunar eclipse series which began on -852 May 7 and ended on 428 June 13. The duration of Saros series 56 was 1280.1 years, and it contained 72 lunar eclipses.

• The number of times the word "Yeah" is used by Michael Stipe (R.E.M.) in the song Man on the Moon
• The number of times the word "Yeah" is used in the song lithium by Nirvana (this could have possibly influenced R.E.M.)

Fifty-six is:

• The number of men who signed the United States Declaration of Independence
• The code for international direct dial phone calls to Chile
• The maximum speed of analog data transmission over a POTS in the 20th century was 56 kbit/s
• The total count of the number of lower case letters in this sentance.
• The name of the town Fifty-Six, Arkansas
• The number of men of Netophah at the census of men of Israel upon return from exile (Ezra 2:22)
• The symbol of the 1956 Hungarian Revolution
• In baseball, the number of consecutive games in which Joe DiMaggio had a base hit in 1941, still a record
• The car number of Ray Peyton, Jr. (Breckin Meyer) in Herbie Fully Loaded
• Famous Brazilian politician, Enéas Carneiro has an odd way of repeating the number of his party, "Fifty-Six" (cinqüenta e seis, in Portuguese), making it a widely repeated jargon in his country

56 A.D., 56 B.C., 1956, 2056, etc.