55818288 has 40 divisors (see below), whose sum is σ = 160220400. Its totient is φ = 18605952.

The previous prime is 55818253. The next prime is 55818299. The reversal of 55818288 is 88281855.

55818288 is a `hidden beast` number, since 558 + 18 + 2 + 88 = 666.

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, 64173 + ... + 65036.

It is an arithmetic number, because the mean of its divisors is an integer number (4005510).

Almost surely, 2^55818288 is an apocalyptic number.

It is an amenable number.

55818288 is an abundant number, since it is smaller than the sum of its proper divisors (104402112).

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

55818288 is a wasteful number, since it uses less digits than its factorization.

55818288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129226 (or 129214 counting only the distinct ones).

The product of its digits is 204800, while the sum is 45.

The square root of 55818288 is about 7471.1637647692. The cubic root of 55818288 is about 382.1719755975.

The spelling of 55818288 in words is "fifty-five million, eight hundred eighteen thousand, two hundred eighty-eight".