55908920 has 32 divisors (see below), whose sum is σ = 133196400. Its totient is φ = 21047808.

The previous prime is 55908917. The next prime is 55908959. The reversal of 55908920 is 2980955.

It is a happy number.

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, 40430 + ... + 41789.

Almost surely, 2^55908920 is an apocalyptic number.

It is an amenable number.

55908920 is an abundant number, since it is smaller than the sum of its proper divisors (77287480).

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

55908920 is a wasteful number, since it uses less digits than its factorization.

55908920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82247 (or 82243 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 38.

The square root of 55908920 is about 7477.2267586318. The cubic root of 55908920 is about 382.3787076081.

The spelling of 55908920 in words is "fifty-five million, nine hundred eight thousand, nine hundred twenty".