55569988 has 12 divisors (see below), whose sum is σ = 97339900. Its totient is φ = 27758592.

The previous prime is 55569979. The next prime is 55570007. The reversal of 55569988 is 88996555.

It can be written as a sum of positive squares in 2 ways, for example, as 41190724 + 14379264 = 6418^2 + 3792^2 .

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, 1413 + ... + 10636.

Almost surely, 2^55569988 is an apocalyptic number.

It is an amenable number.

55569988 is a deficient number, since it is larger than the sum of its proper divisors (41769912).

55569988 is a wasteful number, since it uses less digits than its factorization.

55569988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13206 (or 13204 counting only the distinct ones).

The product of its digits is 3888000, while the sum is 55.

The square root of 55569988 is about 7454.5280199353. The cubic root of 55569988 is about 381.6044533730.

The spelling of 55569988 in words is "fifty-five million, five hundred sixty-nine thousand, nine hundred eighty-eight".