22904537 has 2 divisors, whose sum is σ = 22904538. Its totient is φ = 22904536.

The previous prime is 22904507. The next prime is 22904561. The reversal of 22904537 is 73540922.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14776336 + 8128201 = 3844^2 + 2851^2 .

It is a cyclic number.

It is not a de Polignac number, because 22904537 - 2⁶ = 22904473 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22904507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11452268 + 11452269.

It is an arithmetic number, because the mean of its divisors is an integer number (11452269).

Almost surely, 2^22904537 is an apocalyptic number.

It is an amenable number.

22904537 is a deficient number, since it is larger than the sum of its proper divisors (1).

22904537 is an equidigital number, since it uses as much as digits as its factorization.

22904537 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 22904537 is about 4785.8684687317. The cubic root of 22904537 is about 283.9926971937.

The spelling of 22904537 in words is "twenty-two million, nine hundred four thousand, five hundred thirty-seven".