22564499 has 2 divisors, whose sum is σ = 22564500. Its totient is φ = 22564498.

The previous prime is 22564469. The next prime is 22564513. The reversal of 22564499 is 99446522.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22564499 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22564459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11282249 + 11282250.

It is an arithmetic number, because the mean of its divisors is an integer number (11282250).

Almost surely, 2^22564499 is an apocalyptic number.

22564499 is a deficient number, since it is larger than the sum of its proper divisors (1).

22564499 is an equidigital number, since it uses as much as digits as its factorization.

22564499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 41.

The square root of 22564499 is about 4750.2104163921. The cubic root of 22564499 is about 282.5803107871.

The spelling of 22564499 in words is "twenty-two million, five hundred sixty-four thousand, four hundred ninety-nine".