23933557 has 2 divisors, whose sum is σ = 23933558. Its totient is φ = 23933556.

The previous prime is 23933549. The next prime is 23933563. The reversal of 23933557 is 75533932.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15673681 + 8259876 = 3959^2 + 2874^2 .

It is a cyclic number.

It is not a de Polignac number, because 23933557 - 2³ = 23933549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23933057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11966778 + 11966779.

It is an arithmetic number, because the mean of its divisors is an integer number (11966779).

Almost surely, 2^23933557 is an apocalyptic number.

It is an amenable number.

23933557 is a deficient number, since it is larger than the sum of its proper divisors (1).

23933557 is an equidigital number, since it uses as much as digits as its factorization.

23933557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 85050, while the sum is 37.

The square root of 23933557 is about 4892.1934753237. The cubic root of 23933557 is about 288.1834808508.

The spelling of 23933557 in words is "twenty-three million, nine hundred thirty-three thousand, five hundred fifty-seven".