55709968 has 20 divisors (see below), whose sum is σ = 108234640. Its totient is φ = 27778464.

The previous prime is 55709959. The next prime is 55709981. The reversal of 55709968 is 86990755.

It is a super-2 number, since 2×55709968² = 6207201069122048, which contains 22 as substring.

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, 1471 + ... + 10657.

It is an arithmetic number, because the mean of its divisors is an integer number (5411732).

Almost surely, 2^55709968 is an apocalyptic number.

It is an amenable number.

55709968 is a deficient number, since it is larger than the sum of its proper divisors (52524672).

55709968 is a wasteful number, since it uses less digits than its factorization.

55709968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9574 (or 9568 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 49.

The square root of 55709968 is about 7463.9110391269. The cubic root of 55709968 is about 381.9246034142.

The spelling of 55709968 in words is "fifty-five million, seven hundred nine thousand, nine hundred sixty-eight".