22504597 has 2 divisors, whose sum is σ = 22504598. Its totient is φ = 22504596.

The previous prime is 22504577. The next prime is 22504631. The reversal of 22504597 is 79540522.

It is an a-pointer prime, because the next prime (22504631) can be obtained adding 22504597 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18783556 + 3721041 = 4334^2 + 1929^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22504597 is a prime.

It is a super-2 number, since 2×22504597² = 1012913772264818, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22504577) 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, 11252298 + 11252299.

It is an arithmetic number, because the mean of its divisors is an integer number (11252299).

Almost surely, 2^22504597 is an apocalyptic number.

It is an amenable number.

22504597 is a deficient number, since it is larger than the sum of its proper divisors (1).

22504597 is an equidigital number, since it uses as much as digits as its factorization.

22504597 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 22504597 is about 4743.9010318513. The cubic root of 22504597 is about 282.3300337667.

The spelling of 22504597 in words is "twenty-two million, five hundred four thousand, five hundred ninety-seven".