23255987 has 2 divisors, whose sum is σ = 23255988. Its totient is φ = 23255986.

The previous prime is 23255977. The next prime is 23255989. The reversal of 23255987 is 78955232.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23255987 - 2⁸ = 23255731 is a prime.

It is a super-3 number, since 3×23255987³ (a number of 23 digits) contains 333 as substring.

Together with 23255989, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23255989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11627993 + 11627994.

It is an arithmetic number, because the mean of its divisors is an integer number (11627994).

Almost surely, 2^23255987 is an apocalyptic number.

23255987 is a deficient number, since it is larger than the sum of its proper divisors (1).

23255987 is an equidigital number, since it uses as much as digits as its factorization.

23255987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 151200, while the sum is 41.

The square root of 23255987 is about 4822.4461635149. The cubic root of 23255987 is about 285.4378700594.

It can be divided in two parts, 23255 and 987, that added together give a palindrome (24242).

The spelling of 23255987 in words is "twenty-three million, two hundred fifty-five thousand, nine hundred eighty-seven".