23528257 has 2 divisors, whose sum is σ = 23528258. Its totient is φ = 23528256.

The previous prime is 23528233. The next prime is 23528269. The reversal of 23528257 is 75282532.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22886656 + 641601 = 4784^2 + 801^2 .

It is a cyclic number.

It is not a de Polignac number, because 23528257 - 2¹⁹ = 23003969 is a prime.

It is not a weakly prime, because it can be changed into another prime (23528207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11764128 + 11764129.

It is an arithmetic number, because the mean of its divisors is an integer number (11764129).

Almost surely, 2^23528257 is an apocalyptic number.

It is an amenable number.

23528257 is a deficient number, since it is larger than the sum of its proper divisors (1).

23528257 is an equidigital number, since it uses as much as digits as its factorization.

23528257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 33600, while the sum is 34.

The square root of 23528257 is about 4850.5934688448. The cubic root of 23528257 is about 286.5474744854.

It can be divided in two parts, 2352 and 8257, that added together give a square (10609 = 103²).

The spelling of 23528257 in words is "twenty-three million, five hundred twenty-eight thousand, two hundred fifty-seven".