22815361 has 2 divisors, whose sum is σ = 22815362. Its totient is φ = 22815360.

The previous prime is 22815337. The next prime is 22815389. The reversal of 22815361 is 16351822.

It is an a-pointer prime, because the next prime (22815389) can be obtained adding 22815361 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18653761 + 4161600 = 4319^2 + 2040^2 .

It is a cyclic number.

It is not a de Polignac number, because 22815361 - 2⁵ = 22815329 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22815391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11407680 + 11407681.

It is an arithmetic number, because the mean of its divisors is an integer number (11407681).

Almost surely, 2^22815361 is an apocalyptic number.

It is an amenable number.

22815361 is a deficient number, since it is larger than the sum of its proper divisors (1).

22815361 is an equidigital number, since it uses as much as digits as its factorization.

22815361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2880, while the sum is 28.

The square root of 22815361 is about 4776.5427874143. The cubic root of 22815361 is about 283.6236542822.

The spelling of 22815361 in words is "twenty-two million, eight hundred fifteen thousand, three hundred sixty-one".