258905197 has 2 divisors, whose sum is σ = 258905198. Its totient is φ = 258905196.

The previous prime is 258905161. The next prime is 258905239. The reversal of 258905197 is 791509852.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 168636196 + 90269001 = 12986^2 + 9501^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-258905197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (258905147) 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, 129452598 + 129452599.

It is an arithmetic number, because the mean of its divisors is an integer number (129452599).

Almost surely, 2^258905197 is an apocalyptic number.

It is an amenable number.

258905197 is a deficient number, since it is larger than the sum of its proper divisors (1).

258905197 is an equidigital number, since it uses as much as digits as its factorization.

258905197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 226800, while the sum is 46.

The square root of 258905197 is about 16090.5312839570. The cubic root of 258905197 is about 637.3533253230.

The spelling of 258905197 in words is "two hundred fifty-eight million, nine hundred five thousand, one hundred ninety-seven".