258026231 has 2 divisors, whose sum is σ = 258026232. Its totient is φ = 258026230.

The previous prime is 258026177. The next prime is 258026261. The reversal of 258026231 is 132620852.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-258026231 is a prime.

It is a super-2 number, since 2×258026231² = 133155071768130722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 258026194 and 258026203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (258026261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129013115 + 129013116.

It is an arithmetic number, because the mean of its divisors is an integer number (129013116).

Almost surely, 2^258026231 is an apocalyptic number.

258026231 is a deficient number, since it is larger than the sum of its proper divisors (1).

258026231 is an equidigital number, since it uses as much as digits as its factorization.

258026231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 258026231 is about 16063.1949188199. The cubic root of 258026231 is about 636.6312501276.

The spelling of 258026231 in words is "two hundred fifty-eight million, twenty-six thousand, two hundred thirty-one".