23165537 has 2 divisors, whose sum is σ = 23165538. Its totient is φ = 23165536.

The previous prime is 23165521. The next prime is 23165551. The reversal of 23165537 is 73556132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13424896 + 9740641 = 3664^2 + 3121^2 .

It is a cyclic number.

It is not a de Polignac number, because 23165537 - 2⁴ = 23165521 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23165557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11582768 + 11582769.

It is an arithmetic number, because the mean of its divisors is an integer number (11582769).

Almost surely, 2^23165537 is an apocalyptic number.

It is an amenable number.

23165537 is a deficient number, since it is larger than the sum of its proper divisors (1).

23165537 is an equidigital number, since it uses as much as digits as its factorization.

23165537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18900, while the sum is 32.

The square root of 23165537 is about 4813.0590064947. The cubic root of 23165537 is about 285.0673360952.

The spelling of 23165537 in words is "twenty-three million, one hundred sixty-five thousand, five hundred thirty-seven".