55599968 has 24 divisors (see below), whose sum is σ = 111531168. Its totient is φ = 27274624.

The previous prime is 55599967. The next prime is 55599997. The reversal of 55599968 is 86999555.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55599961) 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, 14696 + ... + 18087.

It is an arithmetic number, because the mean of its divisors is an integer number (4647132).

Almost surely, 2^55599968 is an apocalyptic number.

It is an amenable number.

55599968 is an abundant number, since it is smaller than the sum of its proper divisors (55931200).

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

55599968 is a wasteful number, since it uses less digits than its factorization.

55599968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32846 (or 32838 counting only the distinct ones).

The product of its digits is 4374000, while the sum is 56.

The square root of 55599968 is about 7456.5386071555. The cubic root of 55599968 is about 381.6730662170.

The spelling of 55599968 in words is "fifty-five million, five hundred ninety-nine thousand, nine hundred sixty-eight".