23927557 has 2 divisors, whose sum is σ = 23927558. Its totient is φ = 23927556.

The previous prime is 23927513. The next prime is 23927569. The reversal of 23927557 is 75572932.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23097636 + 829921 = 4806^2 + 911^2 .

It is a cyclic number.

It is not a de Polignac number, because 23927557 - 2¹⁵ = 23894789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23927507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11963778 + 11963779.

It is an arithmetic number, because the mean of its divisors is an integer number (11963779).

Almost surely, 2^23927557 is an apocalyptic number.

It is an amenable number.

23927557 is a deficient number, since it is larger than the sum of its proper divisors (1).

23927557 is an equidigital number, since it uses as much as digits as its factorization.

23927557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 132300, while the sum is 40.

The square root of 23927557 is about 4891.5802150225. The cubic root of 23927557 is about 288.1593968782.

The spelling of 23927557 in words is "twenty-three million, nine hundred twenty-seven thousand, five hundred fifty-seven".