55318790 has 16 divisors (see below), whose sum is σ = 99658512. Its totient is φ = 22108704.

The previous prime is 55318789. The next prime is 55318807. The reversal of 55318790 is 9781355.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22292 + ... + 24648.

It is an arithmetic number, because the mean of its divisors is an integer number (6228657).

Almost surely, 2^55318790 is an apocalyptic number.

55318790 is a deficient number, since it is larger than the sum of its proper divisors (44339722).

55318790 is a wasteful number, since it uses less digits than its factorization.

55318790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4711.

The product of its (nonzero) digits is 37800, while the sum is 38.

The square root of 55318790 is about 7437.6602503744. The cubic root of 55318790 is about 381.0285845052.

The spelling of 55318790 in words is "fifty-five million, three hundred eighteen thousand, seven hundred ninety".