23502257 has 2 divisors, whose sum is σ = 23502258. Its totient is φ = 23502256.

The previous prime is 23502233. The next prime is 23502287. The reversal of 23502257 is 75220532.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22193521 + 1308736 = 4711^2 + 1144^2 .

It is a cyclic number.

It is not a de Polignac number, because 23502257 - 2¹² = 23498161 is a prime.

It is not a weakly prime, because it can be changed into another prime (23502287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11751128 + 11751129.

It is an arithmetic number, because the mean of its divisors is an integer number (11751129).

Almost surely, 2^23502257 is an apocalyptic number.

It is an amenable number.

23502257 is a deficient number, since it is larger than the sum of its proper divisors (1).

23502257 is an equidigital number, since it uses as much as digits as its factorization.

23502257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 23502257 is about 4847.9126436024. The cubic root of 23502257 is about 286.4418854154.

Adding to 23502257 its reverse (75220532), we get a palindrome (98722789).

The spelling of 23502257 in words is "twenty-three million, five hundred two thousand, two hundred fifty-seven".