56715217 has 12 divisors (see below), whose sum is σ = 64088064. Its totient is φ = 50072880.

The previous prime is 56715203. The next prime is 56715223. The reversal of 56715217 is 71251765.

It is a happy number.

It is not a de Polignac number, because 56715217 - 2¹¹ = 56713169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56715277) 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, 3409 + ... + 11182.

It is an arithmetic number, because the mean of its divisors is an integer number (5340672).

Almost surely, 2^56715217 is an apocalyptic number.

It is an amenable number.

56715217 is a deficient number, since it is larger than the sum of its proper divisors (7372847).

56715217 is a wasteful number, since it uses less digits than its factorization.

56715217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14640 (or 14627 counting only the distinct ones).

The product of its digits is 14700, while the sum is 34.

The square root of 56715217 is about 7530.9506040074. The cubic root of 56715217 is about 384.2081142761.

The spelling of 56715217 in words is "fifty-six million, seven hundred fifteen thousand, two hundred seventeen".