22815959 has 2 divisors, whose sum is σ = 22815960. Its totient is φ = 22815958.

The previous prime is 22815913. The next prime is 22815971. The reversal of 22815959 is 95951822.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22815959 - 2¹⁶ = 22750423 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22815059) by changing a digit.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11407979 + 11407980.

It is an arithmetic number, because the mean of its divisors is an integer number (11407980).

Almost surely, 2^22815959 is an apocalyptic number.

22815959 is a deficient number, since it is larger than the sum of its proper divisors (1).

22815959 is an equidigital number, since it uses as much as digits as its factorization.

22815959 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 41.

The square root of 22815959 is about 4776.6053845801. The cubic root of 22815959 is about 283.6261322247.

The spelling of 22815959 in words is "twenty-two million, eight hundred fifteen thousand, nine hundred fifty-nine".