55318824 has 48 divisors (see below), whose sum is σ = 163444320. Its totient is φ = 16763040.

The previous prime is 55318807. The next prime is 55318877. The reversal of 55318824 is 42881355.

It is a happy number.

55318824 is a `hidden beast` number, since 553 + 1 + 88 + 24 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34132 + ... + 35715.

It is an arithmetic number, because the mean of its divisors is an integer number (3405090).

Almost surely, 2^55318824 is an apocalyptic number.

It is an amenable number.

55318824 is an abundant number, since it is smaller than the sum of its proper divisors (108125496).

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

55318824 is a wasteful number, since it uses less digits than its factorization.

55318824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69870 (or 69863 counting only the distinct ones).

The product of its digits is 38400, while the sum is 36.

The square root of 55318824 is about 7437.6625360391. The cubic root of 55318824 is about 381.0286625677.

The spelling of 55318824 in words is "fifty-five million, three hundred eighteen thousand, eight hundred twenty-four".