22890563 has 2 divisors, whose sum is σ = 22890564. Its totient is φ = 22890562.

The previous prime is 22890529. The next prime is 22890601. The reversal of 22890563 is 36509822.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22890563 - 2⁶ = 22890499 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22890163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11445281 + 11445282.

It is an arithmetic number, because the mean of its divisors is an integer number (11445282).

Almost surely, 2^22890563 is an apocalyptic number.

22890563 is a deficient number, since it is larger than the sum of its proper divisors (1).

22890563 is an equidigital number, since it uses as much as digits as its factorization.

22890563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 22890563 is about 4784.4083228755. The cubic root of 22890563 is about 283.9349310361.

The spelling of 22890563 in words is "twenty-two million, eight hundred ninety thousand, five hundred sixty-three".