57561520230 has 24 divisors (see below), whose sum is σ = 149659952832. Its totient is φ = 15349738704.

The previous prime is 57561520217. The next prime is 57561520249. The reversal of 57561520230 is 3202516575.

57561520230 is a `hidden beast` number, since 5 + 7 + 5 + 615 + 2 + 0 + 2 + 30 = 666.

It is a super-2 number, since 2×57561520230² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 319786134 + ... + 319786313.

It is an arithmetic number, because the mean of its divisors is an integer number (6235831368).

Almost surely, 2^57561520230 is an apocalyptic number.

57561520230 is an abundant number, since it is smaller than the sum of its proper divisors (92098432602).

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

57561520230 is a wasteful number, since it uses less digits than its factorization.

57561520230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639572460 (or 639572457 counting only the distinct ones).

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

The spelling of 57561520230 in words is "fifty-seven billion, five hundred sixty-one million, five hundred twenty thousand, two hundred thirty".