Fifty-six (56, LVI) is the natural number following fifty-five and preceeding fifty-seven. It is the sum of the first six triangular numbers, as well as the sum of six consecutive primes (3 + 5 + 7 + 11 + 13 + 17). Its divisors are 1, 2, 4, 7, 8, 14, 28 and 56; its factorisation is

• The atomic number of barium.
• The number of men who signed the United States Declaration of Independence.
• The code for international direct dial phone calls to Chile.
• 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 (Holy Bible, Ezra 2:22).