56222217 has 12 divisors (see below), whose sum is σ = 81282240. Its totient is φ = 37448088.

The previous prime is 56222183. The next prime is 56222219. The reversal of 56222217 is 71222265.

56222217 is a `hidden beast` number, since 5 + 622 + 22 + 17 = 666.

It is not a de Polignac number, because 56222217 - 2¹⁵ = 56189449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56222219) 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, 12028 + ... + 16034.

It is an arithmetic number, because the mean of its divisors is an integer number (6773520).

Almost surely, 2^56222217 is an apocalyptic number.

It is an amenable number.

56222217 is a deficient number, since it is larger than the sum of its proper divisors (25060023).

56222217 is a wasteful number, since it uses less digits than its factorization.

56222217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5572 (or 5569 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 56222217 is about 7498.1475712338. The cubic root of 56222217 is about 383.0916232155.

The spelling of 56222217 in words is "fifty-six million, two hundred twenty-two thousand, two hundred seventeen".