23852021 has 2 divisors, whose sum is σ = 23852022. Its totient is φ = 23852020.

The previous prime is 23851991. The next prime is 23852033. The reversal of 23852021 is 12025832.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20295025 + 3556996 = 4505^2 + 1886^2 .

It is a cyclic number.

It is not a de Polignac number, because 23852021 - 2⁶ = 23851957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23852221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11926010 + 11926011.

It is an arithmetic number, because the mean of its divisors is an integer number (11926011).

Almost surely, 2^23852021 is an apocalyptic number.

It is an amenable number.

23852021 is a deficient number, since it is larger than the sum of its proper divisors (1).

23852021 is an equidigital number, since it uses as much as digits as its factorization.

23852021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 23852021 is about 4883.8530895186. The cubic root of 23852021 is about 287.8558507344.

Adding to 23852021 its reverse (12025832), we get a palindrome (35877853).

The spelling of 23852021 in words is "twenty-three million, eight hundred fifty-two thousand, twenty-one".