22715317 has 4 divisors (see below), whose sum is σ = 23910880. Its totient is φ = 21519756.

The previous prime is 22715293. The next prime is 22715321. The reversal of 22715317 is 71351722.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22715317 - 2²³ = 14326709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22715387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 597753 + ... + 597790.

It is an arithmetic number, because the mean of its divisors is an integer number (5977720).

Almost surely, 2^22715317 is an apocalyptic number.

It is an amenable number.

22715317 is a deficient number, since it is larger than the sum of its proper divisors (1195563).

22715317 is a wasteful number, since it uses less digits than its factorization.

22715317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1195562.

The product of its digits is 2940, while the sum is 28.

The square root of 22715317 is about 4766.0588540218. The cubic root of 22715317 is about 283.2084892507.

It can be divided in two parts, 22715 and 317, that added together give a palindrome (23032).

The spelling of 22715317 in words is "twenty-two million, seven hundred fifteen thousand, three hundred seventeen".