56915565 has 16 divisors (see below), whose sum is σ = 104074368. Its totient is φ = 26018496.

The previous prime is 56915561. The next prime is 56915581. The reversal of 56915565 is 56551965.

56915565 is nontrivially palindromic in base 14.

It is not a de Polignac number, because 56915565 - 2² = 56915561 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56915561) 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, 270922 + ... + 271131.

It is an arithmetic number, because the mean of its divisors is an integer number (6504648).

Almost surely, 2^56915565 is an apocalyptic number.

It is an amenable number.

56915565 is a deficient number, since it is larger than the sum of its proper divisors (47158803).

56915565 is a wasteful number, since it uses less digits than its factorization.

56915565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542068.

The product of its digits is 202500, while the sum is 42.

The square root of 56915565 is about 7544.2405184352. The cubic root of 56915565 is about 384.6599910368.

The spelling of 56915565 in words is "fifty-six million, nine hundred fifteen thousand, five hundred sixty-five".