258187 has 6 divisors (see below), whose sum is σ = 268268. Its totient is φ = 248472.

The previous prime is 258173. The next prime is 258197. The reversal of 258187 is 781852.

It is a de Polignac number, because none of the positive numbers 2^k-258187 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (258107) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 688 + ... + 994.

2²⁵⁸¹⁸⁷ is an apocalyptic number.

258187 is a deficient number, since it is larger than the sum of its proper divisors (10081).

258187 is an equidigital number, since it uses as much as digits as its factorization.

258187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365 (or 336 counting only the distinct ones).

The product of its digits is 4480, while the sum is 31.

The square root of 258187 is about 508.1210485701. The cubic root of 258187 is about 63.6763445110.

The spelling of 258187 in words is "two hundred fifty-eight thousand, one hundred eighty-seven".