22490539 has 2 divisors, whose sum is σ = 22490540. Its totient is φ = 22490538.

The previous prime is 22490537. The next prime is 22490549. The reversal of 22490539 is 93509422.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22490539 - 2¹ = 22490537 is a prime.

Together with 22490537, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (22490537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11245269 + 11245270.

It is an arithmetic number, because the mean of its divisors is an integer number (11245270).

Almost surely, 2^22490539 is an apocalyptic number.

22490539 is a deficient number, since it is larger than the sum of its proper divisors (1).

22490539 is an equidigital number, since it uses as much as digits as its factorization.

22490539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 22490539 is about 4742.4191084298. The cubic root of 22490539 is about 282.2712335974.

The spelling of 22490539 in words is "twenty-two million, four hundred ninety thousand, five hundred thirty-nine".