56591271 has 16 divisors (see below), whose sum is σ = 91461120. Its totient is φ = 34297560.

The previous prime is 56591263. The next prime is 56591299. The reversal of 56591271 is 17219565.

56591271 is a `hidden beast` number, since 565 + 91 + 2 + 7 + 1 = 666.

It is not a de Polignac number, because 56591271 - 2³ = 56591263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56591221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94975 + ... + 95568.

It is an arithmetic number, because the mean of its divisors is an integer number (5716320).

Almost surely, 2^56591271 is an apocalyptic number.

56591271 is a deficient number, since it is larger than the sum of its proper divisors (34869849).

56591271 is a wasteful number, since it uses less digits than its factorization.

56591271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190563 (or 190557 counting only the distinct ones).

The product of its digits is 18900, while the sum is 36.

The square root of 56591271 is about 7522.7169958732. The cubic root of 56591271 is about 383.9280260614.

The spelling of 56591271 in words is "fifty-six million, five hundred ninety-one thousand, two hundred seventy-one".