56031688 has 8 divisors (see below), whose sum is σ = 105059430. Its totient is φ = 28015840.

The previous prime is 56031667. The next prime is 56031737. The reversal of 56031688 is 88613065.

It can be written as a sum of positive squares in only one way, i.e., 30448324 + 25583364 = 5518^2 + 5058^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3501973 + ... + 3501988.

Almost surely, 2^56031688 is an apocalyptic number.

It is an amenable number.

56031688 is a deficient number, since it is larger than the sum of its proper divisors (49027742).

56031688 is a wasteful number, since it uses less digits than its factorization.

56031688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7003967 (or 7003963 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 56031688 is about 7485.4317176767. The cubic root of 56031688 is about 382.6583859990.

The spelling of 56031688 in words is "fifty-six million, thirty-one thousand, six hundred eighty-eight".