55818318 has 8 divisors (see below), whose sum is σ = 111636648. Its totient is φ = 18606104.

The previous prime is 55818313. The next prime is 55818337. The reversal of 55818318 is 81381855.

It is a sphenic number, since it is the product of 3 distinct primes.

55818318 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55818313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4651521 + ... + 4651532.

It is an arithmetic number, because the mean of its divisors is an integer number (13954581).

Almost surely, 2^55818318 is an apocalyptic number.

55818318 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

55818318 is a wasteful number, since it uses less digits than its factorization.

55818318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9303058.

The product of its digits is 38400, while the sum is 39.

The square root of 55818318 is about 7471.1657724883. The cubic root of 55818318 is about 382.1720440647.

The spelling of 55818318 in words is "fifty-five million, eight hundred eighteen thousand, three hundred eighteen".