12556

12556 is a natural number that follows 12555 and precedes 12557. In base 10 its digits are 1, 2, 5, 5, and 6, and the number is even. As a positive integer, it participates in standard arithmetic operations, divisibility tests, and factorization.

In prime factorization terms, 12556 = 2^2 × 43 × 73. This makes the number composite, with the square factor 2^2 contributing to its non-square-free status. The prime factors are 2, 43, and 73.

Representations of 12556 extend beyond decimal. In binary, 12556 is 110001000001100. In hexadecimal it is 0x310C, and in octal it is 30414. These alternate representations reflect common numeral systems used in computing and digital electronics.

Arithmetic properties of 12556 include its divisibility and congruences. The digit sum is 19, so the number is not divisible by 3 or 9. It is divisible by 4 (since 12556 mod 4 = 0). Its residues modulo small primes include 12556 ≡ 1 (mod 3), 12556 ≡ 1 (mod 9), and 12556 ≡ 5 (mod 11).

As a distinct integer, 12556 does not have a widely noted special significance in mathematics beyond its factorization and representations. It can appear in numerical examples, combinatorial calculations, or cataloging contexts where specific numeric identifiers are used, but there is no well-known constant or theorem specifically tied to this number.