55521875 has 24 divisors (see below), whose sum is σ = 70464240. Its totient is φ = 43740000.

The previous prime is 55521859. The next prime is 55521883. The reversal of 55521875 is 57812555.

It is not a de Polignac number, because 55521875 - 2⁴ = 55521859 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 340544 + ... + 340706.

It is an arithmetic number, because the mean of its divisors is an integer number (2936010).

Almost surely, 2^55521875 is an apocalyptic number.

55521875 is a deficient number, since it is larger than the sum of its proper divisors (14942365).

55521875 is an equidigital number, since it uses as much as digits as its factorization.

55521875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297 (or 277 counting only the distinct ones).

The product of its digits is 70000, while the sum is 38.

The square root of 55521875 is about 7451.3002221089. The cubic root of 55521875 is about 381.4942893734.

The spelling of 55521875 in words is "fifty-five million, five hundred twenty-one thousand, eight hundred seventy-five".