258023891 has 2 divisors, whose sum is σ = 258023892. Its totient is φ = 258023890.

The previous prime is 258023879. The next prime is 258023897. The reversal of 258023891 is 198320852.

258023891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 258023891 - 2⁶ = 258023827 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (258023897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129011945 + 129011946.

It is an arithmetic number, because the mean of its divisors is an integer number (129011946).

Almost surely, 2^258023891 is an apocalyptic number.

258023891 is a deficient number, since it is larger than the sum of its proper divisors (1).

258023891 is an equidigital number, since it uses as much as digits as its factorization.

258023891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 258023891 is about 16063.1220813390. The cubic root of 258023891 is about 636.6293256183.

The spelling of 258023891 in words is "two hundred fifty-eight million, twenty-three thousand, eight hundred ninety-one".