23534257 has 4 divisors (see below), whose sum is σ = 24170356. Its totient is φ = 22898160.

The previous prime is 23534249. The next prime is 23534297. The reversal of 23534257 is 75243532.

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 21986721 + 1547536 = 4689^2 + 1244^2 .

It is a cyclic number.

It is not a de Polignac number, because 23534257 - 2³ = 23534249 is a prime.

It is a super-2 number, since 2×23534257² = 1107722505084098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23534207) 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, 317994 + ... + 318067.

It is an arithmetic number, because the mean of its divisors is an integer number (6042589).

Almost surely, 2^23534257 is an apocalyptic number.

It is an amenable number.

23534257 is a deficient number, since it is larger than the sum of its proper divisors (636099).

23534257 is an equidigital number, since it uses as much as digits as its factorization.

23534257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636098.

The product of its digits is 25200, while the sum is 31.

The square root of 23534257 is about 4851.2119104405. The cubic root of 23534257 is about 286.5718301459.

Adding to 23534257 its reverse (75243532), we get a palindrome (98777789).

The spelling of 23534257 in words is "twenty-three million, five hundred thirty-four thousand, two hundred fifty-seven".