23253581 has 8 divisors (see below), whose sum is σ = 25194624. Its totient is φ = 21334320.

The previous prime is 23253553. The next prime is 23253599. The reversal of 23253581 is 18535232.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23253581 is a prime.

It is a super-2 number, since 2×23253581² = 1081458058647122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23253541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3185 + ... + 7526.

It is an arithmetic number, because the mean of its divisors is an integer number (3149328).

Almost surely, 2^23253581 is an apocalyptic number.

It is an amenable number.

23253581 is a deficient number, since it is larger than the sum of its proper divisors (1941043).

23253581 is a wasteful number, since it uses less digits than its factorization.

23253581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10891.

The product of its digits is 7200, while the sum is 29.

The square root of 23253581 is about 4822.1966986012. The cubic root of 23253581 is about 285.4280261828.

The spelling of 23253581 in words is "twenty-three million, two hundred fifty-three thousand, five hundred eighty-one".