258772873 has 2 divisors, whose sum is σ = 258772874. Its totient is φ = 258772872.

The previous prime is 258772859. The next prime is 258772883. The reversal of 258772873 is 378277852.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 190660864 + 68112009 = 13808^2 + 8253^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-258772873 is a prime.

It is not a weakly prime, because it can be changed into another prime (258772823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129386436 + 129386437.

It is an arithmetic number, because the mean of its divisors is an integer number (129386437).

Almost surely, 2^258772873 is an apocalyptic number.

It is an amenable number.

258772873 is a deficient number, since it is larger than the sum of its proper divisors (1).

258772873 is an equidigital number, since it uses as much as digits as its factorization.

258772873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1317120, while the sum is 49.

The square root of 258772873 is about 16086.4188991832. The cubic root of 258772873 is about 637.2447250651.

The spelling of 258772873 in words is "two hundred fifty-eight million, seven hundred seventy-two thousand, eight hundred seventy-three".