55638924 has 48 divisors (see below), whose sum is σ = 146205696. Its totient is φ = 16315200.

The previous prime is 55638917. The next prime is 55638931. The reversal of 55638924 is 42983655.

It is an interprime number because it is at equal distance from previous prime (55638917) and next prime (55638931).

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, 2707 + ... + 10890.

It is an arithmetic number, because the mean of its divisors is an integer number (3045952).

Almost surely, 2^55638924 is an apocalyptic number.

It is an amenable number.

55638924 is an abundant number, since it is smaller than the sum of its proper divisors (90566772).

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

55638924 is a wasteful number, since it uses less digits than its factorization.

55638924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13646 (or 13644 counting only the distinct ones).

The product of its digits is 259200, while the sum is 42.

The square root of 55638924 is about 7459.1503537601. The cubic root of 55638924 is about 381.7621848822.

The spelling of 55638924 in words is "fifty-five million, six hundred thirty-eight thousand, nine hundred twenty-four".