23559971 has 2 divisors, whose sum is σ = 23559972. Its totient is φ = 23559970.

The previous prime is 23559937. The next prime is 23559973. The reversal of 23559971 is 17995532.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23559971 - 2²² = 19365667 is a prime.

Together with 23559973, 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 (23559973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11779985 + 11779986.

It is an arithmetic number, because the mean of its divisors is an integer number (11779986).

Almost surely, 2^23559971 is an apocalyptic number.

23559971 is a deficient number, since it is larger than the sum of its proper divisors (1).

23559971 is an equidigital number, since it uses as much as digits as its factorization.

23559971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 85050, while the sum is 41.

The square root of 23559971 is about 4853.8614524933. The cubic root of 23559971 is about 286.6761635277.

It can be divided in two parts, 235 and 59971, that added together give a palindrome (60206).

The spelling of 23559971 in words is "twenty-three million, five hundred fifty-nine thousand, nine hundred seventy-one".