55777868 has 12 divisors (see below), whose sum is σ = 97713000. Its totient is φ = 27859872.

The previous prime is 55777859. The next prime is 55777873. The reversal of 55777868 is 86877755.

It is a super-2 number, since 2×55777868² = 6222341117250848, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2618 + ... + 10881.

It is an arithmetic number, because the mean of its divisors is an integer number (8142750).

Almost surely, 2^55777868 is an apocalyptic number.

It is an amenable number.

55777868 is a deficient number, since it is larger than the sum of its proper divisors (41935132).

55777868 is a wasteful number, since it uses less digits than its factorization.

55777868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14536 (or 14534 counting only the distinct ones).

The product of its digits is 3292800, while the sum is 53.

The square root of 55777868 is about 7468.4582076892. The cubic root of 55777868 is about 382.0797052325.

The spelling of 55777868 in words is "fifty-five million, seven hundred seventy-seven thousand, eight hundred sixty-eight".