55668904 has 16 divisors (see below), whose sum is σ = 104699520. Its totient is φ = 27749040.

The previous prime is 55668889. The next prime is 55668913. The reversal of 55668904 is 40986655.

It is a super-2 number, since 2×55668904² = 6198053745122432, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7864 + ... + 13159.

It is an arithmetic number, because the mean of its divisors is an integer number (6543720).

Almost surely, 2^55668904 is an apocalyptic number.

It is an amenable number.

55668904 is a deficient number, since it is larger than the sum of its proper divisors (49030616).

55668904 is a wasteful number, since it uses less digits than its factorization.

55668904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21360 (or 21356 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 43.

The square root of 55668904 is about 7461.1596953825. The cubic root of 55668904 is about 381.8307410560.

The spelling of 55668904 in words is "fifty-five million, six hundred sixty-eight thousand, nine hundred four".