258349297 has 2 divisors, whose sum is σ = 258349298. Its totient is φ = 258349296.

The previous prime is 258349279. The next prime is 258349307. The reversal of 258349297 is 792943852.

Together with previous prime (258349279) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 141514816 + 116834481 = 11896^2 + 10809^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-258349297 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 258349297.

It is not a weakly prime, because it can be changed into another prime (258349397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129174648 + 129174649.

It is an arithmetic number, because the mean of its divisors is an integer number (129174649).

Almost surely, 2^258349297 is an apocalyptic number.

It is an amenable number.

258349297 is a deficient number, since it is larger than the sum of its proper divisors (1).

258349297 is an equidigital number, since it uses as much as digits as its factorization.

258349297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1088640, while the sum is 49.

The square root of 258349297 is about 16073.2478671860. The cubic root of 258349297 is about 636.8968408664.

The spelling of 258349297 in words is "two hundred fifty-eight million, three hundred forty-nine thousand, two hundred ninety-seven".