22245497 has 2 divisors, whose sum is σ = 22245498. Its totient is φ = 22245496.

The previous prime is 22245479. The next prime is 22245521. The reversal of 22245497 is 79454222.

Together with previous prime (22245479) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19324816 + 2920681 = 4396^2 + 1709^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22245497 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22245427) 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, 11122748 + 11122749.

It is an arithmetic number, because the mean of its divisors is an integer number (11122749).

Almost surely, 2^22245497 is an apocalyptic number.

It is an amenable number.

22245497 is a deficient number, since it is larger than the sum of its proper divisors (1).

22245497 is an equidigital number, since it uses as much as digits as its factorization.

22245497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 35.

The square root of 22245497 is about 4716.5132248304. The cubic root of 22245497 is about 281.2423410589.

The spelling of 22245497 in words is "twenty-two million, two hundred forty-five thousand, four hundred ninety-seven".