55870520 has 32 divisors (see below), whose sum is σ = 125921520. Its totient is φ = 22310400.

The previous prime is 55870513. The next prime is 55870541. The reversal of 55870520 is 2507855.

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, 45920 + ... + 47120.

Almost surely, 2^55870520 is an apocalyptic number.

It is an amenable number.

55870520 is an abundant number, since it is smaller than the sum of its proper divisors (70051000).

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

55870520 is a wasteful number, since it uses less digits than its factorization.

55870520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2375 (or 2371 counting only the distinct ones).

The product of its (nonzero) digits is 14000, while the sum is 32.

The square root of 55870520 is about 7474.6585206282. The cubic root of 55870520 is about 382.2911443277.

The spelling of 55870520 in words is "fifty-five million, eight hundred seventy thousand, five hundred twenty".