56751564 has 12 divisors (see below), whose sum is σ = 132420344. Its totient is φ = 18917184.

The previous prime is 56751551. The next prime is 56751619. The reversal of 56751564 is 46515765.

It is a tau number, because it is divible by the number of its divisors (12).

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, 2364637 + ... + 2364660.

Almost surely, 2^56751564 is an apocalyptic number.

It is an amenable number.

56751564 is an abundant number, since it is smaller than the sum of its proper divisors (75668780).

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

56751564 is a wasteful number, since it uses less digits than its factorization.

56751564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4729304 (or 4729302 counting only the distinct ones).

The product of its digits is 126000, while the sum is 39.

The square root of 56751564 is about 7533.3633922704. The cubic root of 56751564 is about 384.2901723840.

The spelling of 56751564 in words is "fifty-six million, seven hundred fifty-one thousand, five hundred sixty-four".