56603865 has 16 divisors (see below), whose sum is σ = 91502208. Its totient is φ = 29876736.

The previous prime is 56603849. The next prime is 56603873. The reversal of 56603865 is 56830665.

It is not a de Polignac number, because 56603865 - 2⁴ = 56603849 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 17997 + ... + 20906.

It is an arithmetic number, because the mean of its divisors is an integer number (5718888).

Almost surely, 2^56603865 is an apocalyptic number.

It is an amenable number.

56603865 is a deficient number, since it is larger than the sum of its proper divisors (34898343).

56603865 is a wasteful number, since it uses less digits than its factorization.

56603865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39008.

The product of its (nonzero) digits is 129600, while the sum is 39.

The square root of 56603865 is about 7523.5540138953. The cubic root of 56603865 is about 383.9565041337.

The spelling of 56603865 in words is "fifty-six million, six hundred three thousand, eight hundred sixty-five".