258891 has 4 divisors (see below), whose sum is σ = 345192. Its totient is φ = 172592.

The previous prime is 258887. The next prime is 258917. The reversal of 258891 is 198852.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 258891 - 2² = 258887 is a prime.

It is a D-number.

258891 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 258891.

It is not an unprimeable number, because it can be changed into a prime (258871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43146 + ... + 43151.

It is an arithmetic number, because the mean of its divisors is an integer number (86298).

2²⁵⁸⁸⁹¹ is an apocalyptic number.

258891 is a deficient number, since it is larger than the sum of its proper divisors (86301).

258891 is an equidigital number, since it uses as much as digits as its factorization.

258891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86300.

The product of its digits is 5760, while the sum is 33.

The square root of 258891 is about 508.8133252972. The cubic root of 258891 is about 63.7341675408.

The spelling of 258891 in words is "two hundred fifty-eight thousand, eight hundred ninety-one".