22597249 has 2 divisors, whose sum is σ = 22597250. Its totient is φ = 22597248.

The previous prime is 22597229. The next prime is 22597277. The reversal of 22597249 is 94279522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20793600 + 1803649 = 4560^2 + 1343^2 .

It is a cyclic number.

It is not a de Polignac number, because 22597249 - 2²¹ = 20500097 is a prime.

It is not a weakly prime, because it can be changed into another prime (22597219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11298624 + 11298625.

It is an arithmetic number, because the mean of its divisors is an integer number (11298625).

Almost surely, 2^22597249 is an apocalyptic number.

It is an amenable number.

22597249 is a deficient number, since it is larger than the sum of its proper divisors (1).

22597249 is an equidigital number, since it uses as much as digits as its factorization.

22597249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 40.

The square root of 22597249 is about 4753.6563821968. The cubic root of 22597249 is about 282.7169565785.

The spelling of 22597249 in words is "twenty-two million, five hundred ninety-seven thousand, two hundred forty-nine".