23258021 has 2 divisors, whose sum is σ = 23258022. Its totient is φ = 23258020.

The previous prime is 23258003. The next prime is 23258041. The reversal of 23258021 is 12085232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17430625 + 5827396 = 4175^2 + 2414^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23258021 is a prime.

It is a Chen prime.

It is equal to p_1463423 and since 23258021 and 1463423 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23258041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11629010 + 11629011.

It is an arithmetic number, because the mean of its divisors is an integer number (11629011).

Almost surely, 2^23258021 is an apocalyptic number.

It is an amenable number.

23258021 is a deficient number, since it is larger than the sum of its proper divisors (1).

23258021 is an equidigital number, since it uses as much as digits as its factorization.

23258021 is an odious number, because the sum of its binary digits is odd.

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

The square root of 23258021 is about 4822.6570477279. The cubic root of 23258021 is about 285.4461914106.

The spelling of 23258021 in words is "twenty-three million, two hundred fifty-eight thousand, twenty-one".