56420871 has 8 divisors (see below), whose sum is σ = 81014640. Its totient is φ = 34720512.

The previous prime is 56420857. The next prime is 56420873. The reversal of 56420871 is 17802465.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56420871 - 2⁵ = 56420839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56420873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 723306 + ... + 723383.

It is an arithmetic number, because the mean of its divisors is an integer number (10126830).

Almost surely, 2^56420871 is an apocalyptic number.

56420871 is a deficient number, since it is larger than the sum of its proper divisors (24593769).

56420871 is a wasteful number, since it uses less digits than its factorization.

56420871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1446705.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 56420871 is about 7511.3827621817. The cubic root of 56420871 is about 383.5422945568.

It can be divided in two parts, 56420 and 871, that added together give a triangular number (57291 = T₃₃₈).

The spelling of 56420871 in words is "fifty-six million, four hundred twenty thousand, eight hundred seventy-one".