55931668 has 24 divisors (see below), whose sum is σ = 110959520. Its totient is φ = 24455520.

The previous prime is 55931627. The next prime is 55931671. The reversal of 55931668 is 86613955.

55931668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27318 + ... + 29293.

Almost surely, 2^55931668 is an apocalyptic number.

It is an amenable number.

55931668 is a deficient number, since it is larger than the sum of its proper divisors (55027852).

55931668 is a wasteful number, since it uses less digits than its factorization.

55931668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56647 (or 56645 counting only the distinct ones).

The product of its digits is 194400, while the sum is 43.

The square root of 55931668 is about 7478.7477561421. The cubic root of 55931668 is about 382.4305608209.

The spelling of 55931668 in words is "fifty-five million, nine hundred thirty-one thousand, six hundred sixty-eight".