258992273 has 2 divisors, whose sum is σ = 258992274. Its totient is φ = 258992272.

The previous prime is 258992233. The next prime is 258992329. The reversal of 258992273 is 372299852.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 258791569 + 200704 = 16087^2 + 448^2 .

It is a cyclic number.

It is not a de Polignac number, because 258992273 - 2⁸ = 258992017 is a prime.

It is not a weakly prime, because it can be changed into another prime (258992233) 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, 129496136 + 129496137.

It is an arithmetic number, because the mean of its divisors is an integer number (129496137).

Almost surely, 2^258992273 is an apocalyptic number.

It is an amenable number.

258992273 is a deficient number, since it is larger than the sum of its proper divisors (1).

258992273 is an equidigital number, since it uses as much as digits as its factorization.

258992273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 47.

The square root of 258992273 is about 16093.2368714314. The cubic root of 258992273 is about 637.4247696949.

The spelling of 258992273 in words is "two hundred fifty-eight million, nine hundred ninety-two thousand, two hundred seventy-three".