22972517 has 2 divisors, whose sum is σ = 22972518. Its totient is φ = 22972516.

The previous prime is 22972511. The next prime is 22972529. The reversal of 22972517 is 71527922.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18671041 + 4301476 = 4321^2 + 2074^2 .

It is a cyclic number.

It is not a de Polignac number, because 22972517 - 2¹⁶ = 22906981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22972511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11486258 + 11486259.

It is an arithmetic number, because the mean of its divisors is an integer number (11486259).

Almost surely, 2^22972517 is an apocalyptic number.

It is an amenable number.

22972517 is a deficient number, since it is larger than the sum of its proper divisors (1).

22972517 is an equidigital number, since it uses as much as digits as its factorization.

22972517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17640, while the sum is 35.

The square root of 22972517 is about 4792.9653660339. The cubic root of 22972517 is about 284.2733803800.

The spelling of 22972517 in words is "twenty-two million, nine hundred seventy-two thousand, five hundred seventeen".