56997740 has 12 divisors (see below), whose sum is σ = 119695296. Its totient is φ = 22799088.

The previous prime is 56997713. The next prime is 56997761. The reversal of 56997740 is 4779965.

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, 1424924 + ... + 1424963.

It is an arithmetic number, because the mean of its divisors is an integer number (9974608).

Almost surely, 2^56997740 is an apocalyptic number.

It is an amenable number.

56997740 is an abundant number, since it is smaller than the sum of its proper divisors (62697556).

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

56997740 is a wasteful number, since it uses less digits than its factorization.

56997740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2849896 (or 2849894 counting only the distinct ones).

The product of its (nonzero) digits is 476280, while the sum is 47.

The square root of 56997740 is about 7549.6847616308. The cubic root of 56997740 is about 384.8450267373.

The spelling of 56997740 in words is "fifty-six million, nine hundred ninety-seven thousand, seven hundred forty".