258323873 has 2 divisors, whose sum is σ = 258323874. Its totient is φ = 258323872.

The previous prime is 258323839. The next prime is 258323887. The reversal of 258323873 is 378323852.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 213393664 + 44930209 = 14608^2 + 6703^2 .

It is a cyclic number.

It is not a de Polignac number, because 258323873 - 2⁶ = 258323809 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 258323873.

It is not a weakly prime, because it can be changed into another prime (258323893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129161936 + 129161937.

It is an arithmetic number, because the mean of its divisors is an integer number (129161937).

Almost surely, 2^258323873 is an apocalyptic number.

It is an amenable number.

258323873 is a deficient number, since it is larger than the sum of its proper divisors (1).

258323873 is an equidigital number, since it uses as much as digits as its factorization.

258323873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 41.

The square root of 258323873 is about 16072.4569683667. The cubic root of 258323873 is about 636.8759479685.

The spelling of 258323873 in words is "two hundred fifty-eight million, three hundred twenty-three thousand, eight hundred seventy-three".