258455473 has 2 divisors, whose sum is σ = 258455474. Its totient is φ = 258455472.

The previous prime is 258455447. The next prime is 258455497. The reversal of 258455473 is 374554852.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 218803264 + 39652209 = 14792^2 + 6297^2 .

It is a cyclic number.

It is not a de Polignac number, because 258455473 - 2²¹ = 256358321 is a prime.

It is not a weakly prime, because it can be changed into another prime (258455173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129227736 + 129227737.

It is an arithmetic number, because the mean of its divisors is an integer number (129227737).

Almost surely, 2^258455473 is an apocalyptic number.

It is an amenable number.

258455473 is a deficient number, since it is larger than the sum of its proper divisors (1).

258455473 is an equidigital number, since it uses as much as digits as its factorization.

258455473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 672000, while the sum is 43.

The square root of 258455473 is about 16076.5504073480. The cubic root of 258455473 is about 636.9840792139.

The spelling of 258455473 in words is "two hundred fifty-eight million, four hundred fifty-five thousand, four hundred seventy-three".