23273257 has 4 divisors (see below), whose sum is σ = 26598016. Its totient is φ = 19948500.

The previous prime is 23273251. The next prime is 23273273. The reversal of 23273257 is 75237232.

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 a de Polignac number, because none of the positive numbers 2^k-23273257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23273251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1662369 + ... + 1662382.

It is an arithmetic number, because the mean of its divisors is an integer number (6649504).

Almost surely, 2^23273257 is an apocalyptic number.

It is an amenable number.

23273257 is a deficient number, since it is larger than the sum of its proper divisors (3324759).

23273257 is an equidigital number, since it uses as much as digits as its factorization.

23273257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3324758.

The product of its digits is 17640, while the sum is 31.

The square root of 23273257 is about 4824.2364162632. The cubic root of 23273257 is about 285.5085083900.

The spelling of 23273257 in words is "twenty-three million, two hundred seventy-three thousand, two hundred fifty-seven".