22561317 has 6 divisors (see below), whose sum is σ = 32588582. Its totient is φ = 15040872.

The previous prime is 22561313. The next prime is 22561337. The reversal of 22561317 is 71316522.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 13793796 + 8767521 = 3714^2 + 2961^2 .

It is not a de Polignac number, because 22561317 - 2² = 22561313 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 (22561313) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1253398 + ... + 1253415.

Almost surely, 2^22561317 is an apocalyptic number.

It is an amenable number.

22561317 is a deficient number, since it is larger than the sum of its proper divisors (10027265).

22561317 is a wasteful number, since it uses less digits than its factorization.

22561317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2506819 (or 2506816 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 22561317 is about 4749.8754720519. The cubic root of 22561317 is about 282.5670271947.

Adding to 22561317 its reverse (71316522), we get a palindrome (93877839).

The spelling of 22561317 in words is "twenty-two million, five hundred sixty-one thousand, three hundred seventeen".