56913988 has 6 divisors (see below), whose sum is σ = 99599486. Its totient is φ = 28456992.

The previous prime is 56913973. The next prime is 56913991. The reversal of 56913988 is 88931965.

It can be written as a sum of positive squares in only one way, i.e., 55086084 + 1827904 = 7422^2 + 1352^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7114245 + ... + 7114252.

Almost surely, 2^56913988 is an apocalyptic number.

It is an amenable number.

56913988 is a deficient number, since it is larger than the sum of its proper divisors (42685498).

56913988 is a wasteful number, since it uses less digits than its factorization.

56913988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14228501 (or 14228499 counting only the distinct ones).

The product of its digits is 466560, while the sum is 49.

The square root of 56913988 is about 7544.1360008950. The cubic root of 56913988 is about 384.6564383214.

The spelling of 56913988 in words is "fifty-six million, nine hundred thirteen thousand, nine hundred eighty-eight".