23065257 has 4 divisors (see below), whose sum is σ = 30753680. Its totient is φ = 15376836.

The previous prime is 23065249. The next prime is 23065279. The reversal of 23065257 is 75256032.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 23065257 - 2³ = 23065249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23066257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3844207 + ... + 3844212.

It is an arithmetic number, because the mean of its divisors is an integer number (7688420).

Almost surely, 2^23065257 is an apocalyptic number.

It is an amenable number.

23065257 is a deficient number, since it is larger than the sum of its proper divisors (7688423).

23065257 is an equidigital number, since it uses as much as digits as its factorization.

23065257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7688422.

The product of its (nonzero) digits is 12600, while the sum is 30.

The square root of 23065257 is about 4802.6302168708. The cubic root of 23065257 is about 284.6554037657.

The spelling of 23065257 in words is "twenty-three million, sixty-five thousand, two hundred fifty-seven".