258873 has 4 divisors (see below), whose sum is σ = 345168. Its totient is φ = 172580.

The previous prime is 258871. The next prime is 258887. The reversal of 258873 is 378852.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 258873 - 2¹ = 258871 is a prime.

It is a D-number.

It is a Curzon number.

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, 43143 + ... + 43148.

It is an arithmetic number, because the mean of its divisors is an integer number (86292).

2²⁵⁸⁸⁷³ is an apocalyptic number.

It is an amenable number.

258873 is a deficient number, since it is larger than the sum of its proper divisors (86295).

258873 is an equidigital number, since it uses as much as digits as its factorization.

258873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86294.

The product of its digits is 13440, while the sum is 33.

The square root of 258873 is about 508.7956367737. The cubic root of 258873 is about 63.7326904177.

Subtracting from 258873 its sum of digits (33), we obtain a triangular number (258840 = T₇₁₉).

The spelling of 258873 in words is "two hundred fifty-eight thousand, eight hundred seventy-three".