55607618 has 16 divisors (see below), whose sum is σ = 92538720. Its totient is φ = 24847200.

The previous prime is 55607609. The next prime is 55607621. The reversal of 55607618 is 81670655.

It is a happy 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, 20123 + ... + 22718.

It is an arithmetic number, because the mean of its divisors is an integer number (5783670).

Almost surely, 2^55607618 is an apocalyptic number.

55607618 is a deficient number, since it is larger than the sum of its proper divisors (36931102).

55607618 is a wasteful number, since it uses less digits than its factorization.

55607618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42913.

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 55607618 is about 7457.0515621122. The cubic root of 55607618 is about 381.6905702142.

The spelling of 55607618 in words is "fifty-five million, six hundred seven thousand, six hundred eighteen".