56564973 has 20 divisors (see below), whose sum is σ = 84715488. Its totient is φ = 37613160.

The previous prime is 56564969. The next prime is 56564983. The reversal of 56564973 is 37946565.

It is not a de Polignac number, because 56564973 - 2² = 56564969 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56564903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 45640 + ... + 46862.

Almost surely, 2^56564973 is an apocalyptic number.

It is an amenable number.

56564973 is a deficient number, since it is larger than the sum of its proper divisors (28150515).

56564973 is a wasteful number, since it uses less digits than its factorization.

56564973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1806 (or 1797 counting only the distinct ones).

The product of its digits is 680400, while the sum is 45.

The square root of 56564973 is about 7520.9688870517. The cubic root of 56564973 is about 383.8685463135.

The spelling of 56564973 in words is "fifty-six million, five hundred sixty-four thousand, nine hundred seventy-three".