23565251 has 2 divisors, whose sum is σ = 23565252. Its totient is φ = 23565250.

The previous prime is 23565209. The next prime is 23565253. The reversal of 23565251 is 15256532.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23565251 - 2²² = 19370947 is a prime.

Together with 23565253, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23565253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11782625 + 11782626.

It is an arithmetic number, because the mean of its divisors is an integer number (11782626).

Almost surely, 2^23565251 is an apocalyptic number.

23565251 is a deficient number, since it is larger than the sum of its proper divisors (1).

23565251 is an equidigital number, since it uses as much as digits as its factorization.

23565251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9000, while the sum is 29.

The square root of 23565251 is about 4854.4053188830. The cubic root of 23565251 is about 286.6975774913.

The spelling of 23565251 in words is "twenty-three million, five hundred sixty-five thousand, two hundred fifty-one".