55570530 has 32 divisors (see below), whose sum is σ = 139169664. Its totient is φ = 14174336.

The previous prime is 55570523. The next prime is 55570561. The reversal of 55570530 is 3507555.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39579 + ... + 40958.

It is an arithmetic number, because the mean of its divisors is an integer number (4349052).

Almost surely, 2^55570530 is an apocalyptic number.

55570530 is an abundant number, since it is smaller than the sum of its proper divisors (83599134).

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

55570530 is a wasteful number, since it uses less digits than its factorization.

55570530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80570.

The product of its (nonzero) digits is 13125, while the sum is 30.

The square root of 55570530 is about 7454.5643735902. The cubic root of 55570530 is about 381.6056940244.

The spelling of 55570530 in words is "fifty-five million, five hundred seventy thousand, five hundred thirty".