22915229 has 2 divisors, whose sum is σ = 22915230. Its totient is φ = 22915228.

The previous prime is 22915219. The next prime is 22915253. The reversal of 22915229 is 92251922.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18292729 + 4622500 = 4277^2 + 2150^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22915229 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 22915195 and 22915204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22915219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11457614 + 11457615.

It is an arithmetic number, because the mean of its divisors is an integer number (11457615).

Almost surely, 2^22915229 is an apocalyptic number.

It is an amenable number.

22915229 is a deficient number, since it is larger than the sum of its proper divisors (1).

22915229 is an equidigital number, since it uses as much as digits as its factorization.

22915229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 32.

The square root of 22915229 is about 4786.9853770405. The cubic root of 22915229 is about 284.0368802532.

The spelling of 22915229 in words is "twenty-two million, nine hundred fifteen thousand, two hundred twenty-nine".