55915765 has 16 divisors (see below), whose sum is σ = 70862400. Its totient is φ = 42239232.

The previous prime is 55915757. The next prime is 55915777. The reversal of 55915765 is 56751955.

It is a cyclic number.

It is not a de Polignac number, because 55915765 - 2³ = 55915757 is a prime.

It is a congruent number.

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, 35229 + ... + 36781.

It is an arithmetic number, because the mean of its divisors is an integer number (4428900).

Almost surely, 2^55915765 is an apocalyptic number.

It is an amenable number.

55915765 is a deficient number, since it is larger than the sum of its proper divisors (14946635).

55915765 is a wasteful number, since it uses less digits than its factorization.

55915765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1956.

The product of its digits is 236250, while the sum is 43.

The square root of 55915765 is about 7477.6844678015. The cubic root of 55915765 is about 382.3943120080.

The spelling of 55915765 in words is "fifty-five million, nine hundred fifteen thousand, seven hundred sixty-five".