56575530 has 128 divisors (see below), whose sum is σ = 168791040. Its totient is φ = 13366080.

The previous prime is 56575517. The next prime is 56575567. The reversal of 56575530 is 3557565.

56575530 is a `hidden beast` number, since 56 + 5 + 75 + 530 = 666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 127489 + ... + 127931.

It is an arithmetic number, because the mean of its divisors is an integer number (1318680).

Almost surely, 2^56575530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56575530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84395520).

56575530 is an abundant number, since it is smaller than the sum of its proper divisors (112215510).

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

56575530 is a wasteful number, since it uses less digits than its factorization.

56575530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513 (or 507 counting only the distinct ones).

The product of its (nonzero) digits is 78750, while the sum is 36.

The square root of 56575530 is about 7521.6706920737. The cubic root of 56575530 is about 383.8924259216.

The spelling of 56575530 in words is "fifty-six million, five hundred seventy-five thousand, five hundred thirty".