22564361 has 2 divisors, whose sum is σ = 22564362. Its totient is φ = 22564360.

The previous prime is 22564351. The next prime is 22564363. The reversal of 22564361 is 16346522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18835600 + 3728761 = 4340^2 + 1931^2 .

It is a cyclic number.

It is not a de Polignac number, because 22564361 - 2²² = 18370057 is a prime.

It is a Sophie Germain prime.

Together with 22564363, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (22564363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11282180 + 11282181.

It is an arithmetic number, because the mean of its divisors is an integer number (11282181).

Almost surely, 2^22564361 is an apocalyptic number.

It is an amenable number.

22564361 is a deficient number, since it is larger than the sum of its proper divisors (1).

22564361 is an equidigital number, since it uses as much as digits as its factorization.

22564361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 29.

The square root of 22564361 is about 4750.1958906976. The cubic root of 22564361 is about 282.5797347175.

The spelling of 22564361 in words is "twenty-two million, five hundred sixty-four thousand, three hundred sixty-one".