23249257 has 4 divisors (see below), whose sum is σ = 23328900. Its totient is φ = 23169616.

The previous prime is 23249231. The next prime is 23249267. The reversal of 23249257 is 75294232.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10830681 + 12418576 = 3291^2 + 3524^2 .

It is a cyclic number.

It is not a de Polignac number, because 23249257 - 2⁷ = 23249129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23249207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39382 + ... + 39967.

It is an arithmetic number, because the mean of its divisors is an integer number (5832225).

Almost surely, 2^23249257 is an apocalyptic number.

It is an amenable number.

23249257 is a deficient number, since it is larger than the sum of its proper divisors (79643).

23249257 is an equidigital number, since it uses as much as digits as its factorization.

23249257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79642.

The product of its digits is 30240, while the sum is 34.

The square root of 23249257 is about 4821.7483343700. The cubic root of 23249257 is about 285.4103333195.

The spelling of 23249257 in words is "twenty-three million, two hundred forty-nine thousand, two hundred fifty-seven".