22536361 has 2 divisors, whose sum is σ = 22536362. Its totient is φ = 22536360.

The previous prime is 22536329. The next prime is 22536391. The reversal of 22536361 is 16363522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20115225 + 2421136 = 4485^2 + 1556^2 .

It is a cyclic number.

It is not a de Polignac number, because 22536361 - 2⁵ = 22536329 is a prime.

It is not a weakly prime, because it can be changed into another prime (22536391) 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, 11268180 + 11268181.

It is an arithmetic number, because the mean of its divisors is an integer number (11268181).

Almost surely, 2^22536361 is an apocalyptic number.

It is an amenable number.

22536361 is a deficient number, since it is larger than the sum of its proper divisors (1).

22536361 is an equidigital number, since it uses as much as digits as its factorization.

22536361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 28.

The square root of 22536361 is about 4747.2477289478. The cubic root of 22536361 is about 282.4628024221.

Adding to 22536361 its reverse (16363522), we get a palindrome (38899883).

The spelling of 22536361 in words is "twenty-two million, five hundred thirty-six thousand, three hundred sixty-one".