56864571 has 16 divisors (see below), whose sum is σ = 78471168. Its totient is φ = 36590400.

The previous prime is 56864569. The next prime is 56864573. The reversal of 56864571 is 17546865.

It is an interprime number because it is at equal distance from previous prime (56864569) and next prime (56864573).

It is not a de Polignac number, because 56864571 - 2¹ = 56864569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56864573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56886 + ... + 57876.

It is an arithmetic number, because the mean of its divisors is an integer number (4904448).

Almost surely, 2^56864571 is an apocalyptic number.

56864571 is a deficient number, since it is larger than the sum of its proper divisors (21606597).

56864571 is a wasteful number, since it uses less digits than its factorization.

56864571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1642.

The product of its digits is 201600, while the sum is 42.

The square root of 56864571 is about 7540.8600968325. The cubic root of 56864571 is about 384.5450768788.

The spelling of 56864571 in words is "fifty-six million, eight hundred sixty-four thousand, five hundred seventy-one".