56642271 has 16 divisors (see below), whose sum is σ = 87354624. Its totient is φ = 31976064.

The previous prime is 56642263. The next prime is 56642281. The reversal of 56642271 is 17224665.

It is not a de Polignac number, because 56642271 - 2³ = 56642263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56642231) 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, 14506 + ... + 17991.

It is an arithmetic number, because the mean of its divisors is an integer number (5459664).

Almost surely, 2^56642271 is an apocalyptic number.

56642271 is a deficient number, since it is larger than the sum of its proper divisors (30712353).

56642271 is a wasteful number, since it uses less digits than its factorization.

56642271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32590.

The product of its digits is 20160, while the sum is 33.

The square root of 56642271 is about 7526.1059652386. The cubic root of 56642271 is about 384.0433232913.

The spelling of 56642271 in words is "fifty-six million, six hundred forty-two thousand, two hundred seventy-one".