55657968 has 20 divisors (see below), whose sum is σ = 143783208. Its totient is φ = 18552640.

The previous prime is 55657939. The next prime is 55657991. The reversal of 55657968 is 86975655.

It is a self number, because there is not a number n which added to its sum of digits gives 55657968.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 579723 + ... + 579818.

Almost surely, 2^55657968 is an apocalyptic number.

It is an amenable number.

55657968 is an abundant number, since it is smaller than the sum of its proper divisors (88125240).

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

55657968 is a wasteful number, since it uses less digits than its factorization.

55657968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1159552 (or 1159546 counting only the distinct ones).

The product of its digits is 2268000, while the sum is 51.

The square root of 55657968 is about 7460.4267974426. The cubic root of 55657968 is about 381.8057362260.

The spelling of 55657968 in words is "fifty-five million, six hundred fifty-seven thousand, nine hundred sixty-eight".