55533870 has 64 divisors (see below), whose sum is σ = 169251840. Its totient is φ = 12693024.

The previous prime is 55533859. The next prime is 55533899. The reversal of 55533870 is 7833555.

55533870 is a `hidden beast` number, since 5 + 553 + 38 + 70 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12802 + ... + 16581.

It is an arithmetic number, because the mean of its divisors is an integer number (2644560).

Almost surely, 2^55533870 is an apocalyptic number.

55533870 is an abundant number, since it is smaller than the sum of its proper divisors (113717970).

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

55533870 is a wasteful number, since it uses less digits than its factorization.

55533870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29406 (or 29400 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 36.

The square root of 55533870 is about 7452.1050717230. The cubic root of 55533870 is about 381.5217601946.

The spelling of 55533870 in words is "fifty-five million, five hundred thirty-three thousand, eight hundred seventy".