56 (number)

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

Mathematics:

• 56 is a composite number.
• Its divisors are 1, 2, 4, 7, 8, 14, 28, and 56.
• 56 is a Harshad number in base 10, as the sum of its digits (5 + 6 = 11) divides 56 (approximately 5.09 times).
• 56 is the 8th triangular number (1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 = 56).
• It is a pronic number, being the product of 7 and 8.
• 56 is the smallest number that can be expressed as the sum of four squares in 6 ways.
• 56 is the sum of the first six terms of the Fibonacci sequence: 1 + 1 + 2 + 3 + 5 + 8 + 13 + 21 = 55, adding 1 makes 56.
• 56 is a heptagonal number.

Other Fields:

• 56 is the atomic number of barium (Ba).
• +56 is the international dialing code for Chile.
• In numerology, 56 is sometimes interpreted as a number representing practicality, dependability, and responsibility.
• 56 is a common highway number in various countries, including the United States.