23603257 has 2 divisors, whose sum is σ = 23603258. Its totient is φ = 23603256.

The previous prime is 23603231. The next prime is 23603273. The reversal of 23603257 is 75230632.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17131321 + 6471936 = 4139^2 + 2544^2 .

It is a cyclic number.

It is not a de Polignac number, because 23603257 - 2¹¹ = 23601209 is a prime.

It is a super-2 number, since 2×23603257² = 1114227482016098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23603227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11801628 + 11801629.

It is an arithmetic number, because the mean of its divisors is an integer number (11801629).

Almost surely, 2^23603257 is an apocalyptic number.

It is an amenable number.

23603257 is a deficient number, since it is larger than the sum of its proper divisors (1).

23603257 is an equidigital number, since it uses as much as digits as its factorization.

23603257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 28.

The square root of 23603257 is about 4858.3183304514. The cubic root of 23603257 is about 286.8516231744.

Adding to 23603257 its reverse (75230632), we get a palindrome (98833889).

The spelling of 23603257 in words is "twenty-three million, six hundred three thousand, two hundred fifty-seven".