56315905 has 16 divisors (see below), whose sum is σ = 71671680. Its totient is φ = 42360192.

The previous prime is 56315879. The next prime is 56315911. The reversal of 56315905 is 50951365.

It is a cyclic number.

It is not a de Polignac number, because 56315905 - 2⁹ = 56315393 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10852 + ... + 15178.

It is an arithmetic number, because the mean of its divisors is an integer number (4479480).

Almost surely, 2^56315905 is an apocalyptic number.

It is an amenable number.

56315905 is a deficient number, since it is larger than the sum of its proper divisors (15355775).

56315905 is a wasteful number, since it uses less digits than its factorization.

56315905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4488.

The product of its (nonzero) digits is 20250, while the sum is 34.

The square root of 56315905 is about 7504.3923804663. The cubic root of 56315905 is about 383.3042981579.

The spelling of 56315905 in words is "fifty-six million, three hundred fifteen thousand, nine hundred five".