55533880 has 32 divisors (see below), whose sum is σ = 125342640. Its totient is φ = 22144000.

The previous prime is 55533859. The next prime is 55533899. The reversal of 55533880 is 8833555.

55533880 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11880 + ... + 15880.

Almost surely, 2^55533880 is an apocalyptic number.

It is an amenable number.

55533880 is an abundant number, since it is smaller than the sum of its proper divisors (69808760).

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

55533880 is a wasteful number, since it uses less digits than its factorization.

55533880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4359 (or 4355 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 37.

The square root of 55533880 is about 7452.1057426743. The cubic root of 55533880 is about 381.5217830949.

The spelling of 55533880 in words is "fifty-five million, five hundred thirty-three thousand, eight hundred eighty".