56973887 has 16 divisors (see below), whose sum is σ = 60201792. Its totient is φ = 53863680.

The previous prime is 56973883. The next prime is 56973929. The reversal of 56973887 is 78837965.

It is a cyclic number.

It is not a de Polignac number, because 56973887 - 2² = 56973883 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56973883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 341078 + ... + 341244.

It is an arithmetic number, because the mean of its divisors is an integer number (3762612).

Almost surely, 2^56973887 is an apocalyptic number.

56973887 is a deficient number, since it is larger than the sum of its proper divisors (3227905).

56973887 is a wasteful number, since it uses less digits than its factorization.

56973887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418.

The product of its digits is 2540160, while the sum is 53.

The square root of 56973887 is about 7548.1048614868. The cubic root of 56973887 is about 384.7913346128.

The spelling of 56973887 in words is "fifty-six million, nine hundred seventy-three thousand, eight hundred eighty-seven".