23947571 has 2 divisors, whose sum is σ = 23947572. Its totient is φ = 23947570.

The previous prime is 23947559. The next prime is 23947579. The reversal of 23947571 is 17574932.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23947571 - 2¹⁸ = 23685427 is a prime.

It is not a weakly prime, because it can be changed into another prime (23947579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11973785 + 11973786.

It is an arithmetic number, because the mean of its divisors is an integer number (11973786).

Almost surely, 2^23947571 is an apocalyptic number.

23947571 is a deficient number, since it is larger than the sum of its proper divisors (1).

23947571 is an equidigital number, since it uses as much as digits as its factorization.

23947571 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52920, while the sum is 38.

The square root of 23947571 is about 4893.6255475874. The cubic root of 23947571 is about 288.2397173072.

The spelling of 23947571 in words is "twenty-three million, nine hundred forty-seven thousand, five hundred seventy-one".