56372217 has 12 divisors (see below), whose sum is σ = 82058736. Its totient is φ = 34138840.

The previous prime is 56372207. The next prime is 56372219. The reversal of 56372217 is 71227365.

It is not a de Polignac number, because 56372217 - 2¹⁵ = 56339449 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (56372219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42478 + ... + 43784.

It is an arithmetic number, because the mean of its divisors is an integer number (6838228).

Almost surely, 2^56372217 is an apocalyptic number.

It is an amenable number.

56372217 is a deficient number, since it is larger than the sum of its proper divisors (25686519).

56372217 is an equidigital number, since it uses as much as digits as its factorization.

56372217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2628 (or 1321 counting only the distinct ones).

The product of its digits is 17640, while the sum is 33.

The square root of 56372217 is about 7508.1433790252. The cubic root of 56372217 is about 383.4320148379.

Multiplying 56372217 by its sum of digits (33), we get a square (1860283161 = 43131²).

56372217 divided by its sum of digits (33) gives a square (1708249 = 1307²).

It can be divided in two parts, 56 and 372217, that added together give a palindrome (372273).

The spelling of 56372217 in words is "fifty-six million, three hundred seventy-two thousand, two hundred seventeen".