22551449 has 2 divisors, whose sum is σ = 22551450. Its totient is φ = 22551448.

The previous prime is 22551439. The next prime is 22551457. The reversal of 22551449 is 94415522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14961424 + 7590025 = 3868^2 + 2755^2 .

It is a cyclic number.

It is not a de Polignac number, because 22551449 - 2¹² = 22547353 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (22551409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11275724 + 11275725.

It is an arithmetic number, because the mean of its divisors is an integer number (11275725).

Almost surely, 2^22551449 is an apocalyptic number.

It is an amenable number.

22551449 is a deficient number, since it is larger than the sum of its proper divisors (1).

22551449 is an equidigital number, since it uses as much as digits as its factorization.

22551449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14400, while the sum is 32.

The square root of 22551449 is about 4748.8365943671. The cubic root of 22551449 is about 282.5258242506.

The spelling of 22551449 in words is "twenty-two million, five hundred fifty-one thousand, four hundred forty-nine".