22530917 has 2 divisors, whose sum is σ = 22530918. Its totient is φ = 22530916.

The previous prime is 22530901. The next prime is 22530929. The reversal of 22530917 is 71903522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16008001 + 6522916 = 4001^2 + 2554^2 .

It is a cyclic number.

It is not a de Polignac number, because 22530917 - 2⁴ = 22530901 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22530917.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22530997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11265458 + 11265459.

It is an arithmetic number, because the mean of its divisors is an integer number (11265459).

Almost surely, 2^22530917 is an apocalyptic number.

It is an amenable number.

22530917 is a deficient number, since it is larger than the sum of its proper divisors (1).

22530917 is an equidigital number, since it uses as much as digits as its factorization.

22530917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 22530917 is about 4746.6743094508. The cubic root of 22530917 is about 282.4400561983.

The spelling of 22530917 in words is "twenty-two million, five hundred thirty thousand, nine hundred seventeen".