56431571 has 4 divisors (see below), whose sum is σ = 64493232. Its totient is φ = 48369912.

The previous prime is 56431567. The next prime is 56431579. The reversal of 56431571 is 17513465.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56431571 - 2² = 56431567 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56431579) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4030820 + ... + 4030833.

It is an arithmetic number, because the mean of its divisors is an integer number (16123308).

Almost surely, 2^56431571 is an apocalyptic number.

56431571 is a deficient number, since it is larger than the sum of its proper divisors (8061661).

56431571 is an equidigital number, since it uses as much as digits as its factorization.

56431571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8061660.

The product of its digits is 12600, while the sum is 32.

The square root of 56431571 is about 7512.0949807627. The cubic root of 56431571 is about 383.5665387952.

The spelling of 56431571 in words is "fifty-six million, four hundred thirty-one thousand, five hundred seventy-one".