22791037 has 2 divisors, whose sum is σ = 22791038. Its totient is φ = 22791036.

The previous prime is 22791019. The next prime is 22791049. The reversal of 22791037 is 73019722.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19766916 + 3024121 = 4446^2 + 1739^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22791037 is a prime.

It is equal to p_1435891 and since 22791037 and 1435891 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22791337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11395518 + 11395519.

It is an arithmetic number, because the mean of its divisors is an integer number (11395519).

Almost surely, 2^22791037 is an apocalyptic number.

It is an amenable number.

22791037 is a deficient number, since it is larger than the sum of its proper divisors (1).

22791037 is an equidigital number, since it uses as much as digits as its factorization.

22791037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 22791037 is about 4773.9959153732. The cubic root of 22791037 is about 283.5228257965.

The spelling of 22791037 in words is "twenty-two million, seven hundred ninety-one thousand, thirty-seven".