56217715 has 8 divisors (see below), whose sum is σ = 67511808. Its totient is φ = 44940480.

The previous prime is 56217701. The next prime is 56217719. The reversal of 56217715 is 51771265.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-56217715 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56217719) 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, 4935 + ... + 11695.

It is an arithmetic number, because the mean of its divisors is an integer number (8438976).

Almost surely, 2^56217715 is an apocalyptic number.

56217715 is a deficient number, since it is larger than the sum of its proper divisors (11294093).

56217715 is a wasteful number, since it uses less digits than its factorization.

56217715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8429.

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

The square root of 56217715 is about 7497.8473577421. The cubic root of 56217715 is about 383.0813975751.

The spelling of 56217715 in words is "fifty-six million, two hundred seventeen thousand, seven hundred fifteen".