55860864 has 32 divisors (see below), whose sum is σ = 148381440. Its totient is φ = 18620160.

The previous prime is 55860839. The next prime is 55860907. The reversal of 55860864 is 46806855.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×55860864² = 6240872253652992, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 72352 + ... + 73119.

It is an arithmetic number, because the mean of its divisors is an integer number (4636920).

Almost surely, 2^55860864 is an apocalyptic number.

It is an amenable number.

55860864 is an abundant number, since it is smaller than the sum of its proper divisors (92520576).

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

55860864 is a wasteful number, since it uses less digits than its factorization.

55860864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145488 (or 145476 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 42.

The square root of 55860864 is about 7474.0125769228. The cubic root of 55860864 is about 382.2691194985.

The spelling of 55860864 in words is "fifty-five million, eight hundred sixty thousand, eight hundred sixty-four".