22497637 has 2 divisors, whose sum is σ = 22497638. Its totient is φ = 22497636.

The previous prime is 22497619. The next prime is 22497677. The reversal of 22497637 is 73679422.

It is an a-pointer prime, because the next prime (22497677) can be obtained adding 22497637 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13771521 + 8726116 = 3711^2 + 2954^2 .

It is a cyclic number.

It is not a de Polignac number, because 22497637 - 2¹¹ = 22495589 is a prime.

It is a super-2 number, since 2×22497637² = 1012287341167538, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22497637.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22497617) 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, 11248818 + 11248819.

It is an arithmetic number, because the mean of its divisors is an integer number (11248819).

Almost surely, 2^22497637 is an apocalyptic number.

It is an amenable number.

22497637 is a deficient number, since it is larger than the sum of its proper divisors (1).

22497637 is an equidigital number, since it uses as much as digits as its factorization.

22497637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 127008, while the sum is 40.

The square root of 22497637 is about 4743.1674016421. The cubic root of 22497637 is about 282.3009253488.

The spelling of 22497637 in words is "twenty-two million, four hundred ninety-seven thousand, six hundred thirty-seven".