23257589 has 4 divisors (see below), whose sum is σ = 23397024. Its totient is φ = 23118156.

The previous prime is 23257583. The next prime is 23257603. The reversal of 23257589 is 98575232.

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 a cyclic number.

It is not a de Polignac number, because 23257589 - 2²⁴ = 6480373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23257583) 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, 69467 + ... + 69800.

It is an arithmetic number, because the mean of its divisors is an integer number (5849256).

Almost surely, 2^23257589 is an apocalyptic number.

It is an amenable number.

23257589 is a deficient number, since it is larger than the sum of its proper divisors (139435).

23257589 is a wasteful number, since it uses less digits than its factorization.

23257589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139434.

The product of its digits is 151200, while the sum is 41.

The square root of 23257589 is about 4822.6122589319. The cubic root of 23257589 is about 285.4444240846. Note that the first 4 decimals are identical.

The spelling of 23257589 in words is "twenty-three million, two hundred fifty-seven thousand, five hundred eighty-nine".