55865868 has 24 divisors (see below), whose sum is σ = 130498368. Its totient is φ = 18601296.

The previous prime is 55865857. The next prime is 55865917. The reversal of 55865868 is 86856855.

It is a self number, because there is not a number n which added to its sum of digits gives 55865868.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11955 + ... + 15957.

It is an arithmetic number, because the mean of its divisors is an integer number (5437432).

Almost surely, 2^55865868 is an apocalyptic number.

It is an amenable number.

55865868 is an abundant number, since it is smaller than the sum of its proper divisors (74632500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55865868 is a wasteful number, since it uses less digits than its factorization.

55865868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5173 (or 5171 counting only the distinct ones).

The product of its digits is 2304000, while the sum is 51.

The square root of 55865868 is about 7474.3473293660. The cubic root of 55865868 is about 382.2805336767.

The spelling of 55865868 in words is "fifty-five million, eight hundred sixty-five thousand, eight hundred sixty-eight".