22713137 has 2 divisors, whose sum is σ = 22713138. Its totient is φ = 22713136.

The previous prime is 22713133. The next prime is 22713143. The reversal of 22713137 is 73131722.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12222016 + 10491121 = 3496^2 + 3239^2 .

It is a cyclic number.

It is not a de Polignac number, because 22713137 - 2² = 22713133 is a prime.

It is not a weakly prime, because it can be changed into another prime (22713133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11356568 + 11356569.

It is an arithmetic number, because the mean of its divisors is an integer number (11356569).

Almost surely, 2^22713137 is an apocalyptic number.

It is an amenable number.

22713137 is a deficient number, since it is larger than the sum of its proper divisors (1).

22713137 is an equidigital number, since it uses as much as digits as its factorization.

22713137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1764, while the sum is 26.

The square root of 22713137 is about 4765.8301480435. The cubic root of 22713137 is about 283.1994290755.

Adding to 22713137 its reverse (73131722), we get a palindrome (95844859).

The spelling of 22713137 in words is "twenty-two million, seven hundred thirteen thousand, one hundred thirty-seven".