22799521 has 2 divisors, whose sum is σ = 22799522. Its totient is φ = 22799520.

The previous prime is 22799473. The next prime is 22799531. The reversal of 22799521 is 12599722.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13220496 + 9579025 = 3636^2 + 3095^2 .

It is a cyclic number.

It is not a de Polignac number, because 22799521 - 2⁷ = 22799393 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22799531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11399760 + 11399761.

It is an arithmetic number, because the mean of its divisors is an integer number (11399761).

Almost surely, 2^22799521 is an apocalyptic number.

It is an amenable number.

22799521 is a deficient number, since it is larger than the sum of its proper divisors (1).

22799521 is an equidigital number, since it uses as much as digits as its factorization.

22799521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 37.

The square root of 22799521 is about 4774.8843965064. The cubic root of 22799521 is about 283.5580020406.

The spelling of 22799521 in words is "twenty-two million, seven hundred ninety-nine thousand, five hundred twenty-one".