12556056 has 16 divisors (see below), whose sum is σ = 31390200. Its totient is φ = 4185344.

The previous prime is 12556039. The next prime is 12556067. The reversal of 12556056 is 65065521.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 261561 + ... + 261608.

Almost surely, 2^12556056 is an apocalyptic number.

It is an amenable number.

12556056 is an abundant number, since it is smaller than the sum of its proper divisors (18834144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12556056 is a wasteful number, since it uses less digits than its factorization.

12556056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523178 (or 523174 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 12556056 is about 3543.4525536544. The cubic root of 12556056 is about 232.4258429239.

The spelling of 12556056 in words is "twelve million, five hundred fifty-six thousand, fifty-six".