258144197 has 2 divisors, whose sum is σ = 258144198. Its totient is φ = 258144196.

The previous prime is 258144181. The next prime is 258144209. The reversal of 258144197 is 791441852.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 168766081 + 89378116 = 12991^2 + 9454^2 .

It is a cyclic number.

It is not a de Polignac number, because 258144197 - 2⁴ = 258144181 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (258144097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129072098 + 129072099.

It is an arithmetic number, because the mean of its divisors is an integer number (129072099).

Almost surely, 2^258144197 is an apocalyptic number.

It is an amenable number.

258144197 is a deficient number, since it is larger than the sum of its proper divisors (1).

258144197 is an equidigital number, since it uses as much as digits as its factorization.

258144197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 41.

The square root of 258144197 is about 16066.8664337512. The cubic root of 258144197 is about 636.7282549937.

The spelling of 258144197 in words is "two hundred fifty-eight million, one hundred forty-four thousand, one hundred ninety-seven".