258434251 has 2 divisors, whose sum is σ = 258434252. Its totient is φ = 258434250.

The previous prime is 258434243. The next prime is 258434291. The reversal of 258434251 is 152434852.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 258434251 - 2³ = 258434243 is a prime.

It is not a weakly prime, because it can be changed into another prime (258434291) 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, 129217125 + 129217126.

It is an arithmetic number, because the mean of its divisors is an integer number (129217126).

Almost surely, 2^258434251 is an apocalyptic number.

258434251 is a deficient number, since it is larger than the sum of its proper divisors (1).

258434251 is an equidigital number, since it uses as much as digits as its factorization.

258434251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38400, while the sum is 34.

The square root of 258434251 is about 16075.8903641447. The cubic root of 258434251 is about 636.9666443008.

The spelling of 258434251 in words is "two hundred fifty-eight million, four hundred thirty-four thousand, two hundred fifty-one".