56571075 has 96 divisors (see below), whose sum is σ = 119635200. Its totient is φ = 25920000.

The previous prime is 56571071. The next prime is 56571089. The reversal of 56571075 is 57017565.

It is not a de Polignac number, because 56571075 - 2² = 56571071 is a prime.

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 not an unprimeable number, because it can be changed into a prime (56571071) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 140875 + ... + 141275.

It is an arithmetic number, because the mean of its divisors is an integer number (1246200).

Almost surely, 2^56571075 is an apocalyptic number.

56571075 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

56571075 is an abundant number, since it is smaller than the sum of its proper divisors (63064125).

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

56571075 is a wasteful number, since it uses less digits than its factorization.

56571075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450 (or 439 counting only the distinct ones).

The product of its (nonzero) digits is 36750, while the sum is 36.

The square root of 56571075 is about 7521.3745419305. The cubic root of 56571075 is about 383.8823492115.

The spelling of 56571075 in words is "fifty-six million, five hundred seventy-one thousand, seventy-five".