23258491 has 2 divisors, whose sum is σ = 23258492. Its totient is φ = 23258490.

The previous prime is 23258471. The next prime is 23258503. The reversal of 23258491 is 19485232.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23258491 is a prime.

It is not a weakly prime, because it can be changed into another prime (23258461) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11629245 + 11629246.

It is an arithmetic number, because the mean of its divisors is an integer number (11629246).

Almost surely, 2^23258491 is an apocalyptic number.

23258491 is a deficient number, since it is larger than the sum of its proper divisors (1).

23258491 is an equidigital number, since it uses as much as digits as its factorization.

23258491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 34.

The square root of 23258491 is about 4822.7057758068. The cubic root of 23258491 is about 285.4481141710.

It can be divided in two parts, 2325 and 8491, that added together give a square (10816 = 104²).

The spelling of 23258491 in words is "twenty-three million, two hundred fifty-eight thousand, four hundred ninety-one".