56531656 has 16 divisors (see below), whose sum is σ = 106167600. Its totient is φ = 28220304.

The previous prime is 56531641. The next prime is 56531663. The reversal of 56531656 is 65613565.

It is a happy 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, 90 + ... + 10633.

It is an arithmetic number, because the mean of its divisors is an integer number (6635475).

Almost surely, 2^56531656 is an apocalyptic number.

It is an amenable number.

56531656 is a deficient number, since it is larger than the sum of its proper divisors (49635944).

56531656 is a wasteful number, since it uses less digits than its factorization.

56531656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11388 (or 11384 counting only the distinct ones).

The product of its digits is 81000, while the sum is 37.

The square root of 56531656 is about 7518.7536201155. The cubic root of 56531656 is about 383.7931647980.

The spelling of 56531656 in words is "fifty-six million, five hundred thirty-one thousand, six hundred fifty-six".