23988551 has 2 divisors, whose sum is σ = 23988552. Its totient is φ = 23988550.

The previous prime is 23988541. The next prime is 23988571. The reversal of 23988551 is 15588932.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23988551 - 2⁶ = 23988487 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 23988499 and 23988508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23988521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11994275 + 11994276.

It is an arithmetic number, because the mean of its divisors is an integer number (11994276).

Almost surely, 2^23988551 is an apocalyptic number.

23988551 is a deficient number, since it is larger than the sum of its proper divisors (1).

23988551 is an equidigital number, since it uses as much as digits as its factorization.

23988551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86400, while the sum is 41.

The square root of 23988551 is about 4897.8108375069. The cubic root of 23988551 is about 288.4040392234.

The spelling of 23988551 in words is "twenty-three million, nine hundred eighty-eight thousand, five hundred fifty-one".