258197 has 2 divisors, whose sum is σ = 258198. Its totient is φ = 258196.

The previous prime is 258173. The next prime is 258211. The reversal of 258197 is 791852.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 244036 + 14161 = 494^2 + 119^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-258197 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 (258107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129098 + 129099.

It is an arithmetic number, because the mean of its divisors is an integer number (129099).

2²⁵⁸¹⁹⁷ is an apocalyptic number.

It is an amenable number.

258197 is a deficient number, since it is larger than the sum of its proper divisors (1).

258197 is an equidigital number, since it uses as much as digits as its factorization.

258197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040, while the sum is 32.

The square root of 258197 is about 508.1308886498. The cubic root of 258197 is about 63.6771665964.

The spelling of 258197 in words is "two hundred fifty-eight thousand, one hundred ninety-seven".