55749880 has 32 divisors (see below), whose sum is σ = 125681040. Its totient is φ = 22256640.

The previous prime is 55749853. The next prime is 55749893. The reversal of 55749880 is 8894755.

It is a self number, because there is not a number n which added to its sum of digits gives 55749880.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26632 + ... + 28648.

Almost surely, 2^55749880 is an apocalyptic number.

It is an amenable number.

55749880 is an abundant number, since it is smaller than the sum of its proper divisors (69931160).

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

55749880 is a wasteful number, since it uses less digits than its factorization.

55749880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2719 (or 2715 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 46.

The square root of 55749880 is about 7466.5842257354. The cubic root of 55749880 is about 382.0157883883.

The spelling of 55749880 in words is "fifty-five million, seven hundred forty-nine thousand, eight hundred eighty".