258320873 has 2 divisors, whose sum is σ = 258320874. Its totient is φ = 258320872.

The previous prime is 258320863. The next prime is 258320891. The reversal of 258320873 is 378023852.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 168298729 + 90022144 = 12973^2 + 9488^2 .

It is a cyclic number.

It is not a de Polignac number, because 258320873 - 2⁸ = 258320617 is a prime.

It is not a weakly prime, because it can be changed into another prime (258320833) 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, 129160436 + 129160437.

It is an arithmetic number, because the mean of its divisors is an integer number (129160437).

Almost surely, 2^258320873 is an apocalyptic number.

It is an amenable number.

258320873 is a deficient number, since it is larger than the sum of its proper divisors (1).

258320873 is an equidigital number, since it uses as much as digits as its factorization.

258320873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 258320873 is about 16072.3636407344. The cubic root of 258320873 is about 636.8734825424.

The spelling of 258320873 in words is "two hundred fifty-eight million, three hundred twenty thousand, eight hundred seventy-three".