258243 has 8 divisors (see below), whose sum is σ = 350400. Its totient is φ = 169128.

The previous prime is 258241. The next prime is 258253. The reversal of 258243 is 342852.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 258243 - 2¹ = 258241 is a prime.

It is a zygodrome in base 2.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 258243.

It is not an unprimeable number, because it can be changed into a prime (258241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 553 + ... + 906.

It is an arithmetic number, because the mean of its divisors is an integer number (43800).

2²⁵⁸²⁴³ is an apocalyptic number.

258243 is a deficient number, since it is larger than the sum of its proper divisors (92157).

258243 is a wasteful number, since it uses less digits than its factorization.

258243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1521.

The product of its digits is 1920, while the sum is 24.

The square root of 258243 is about 508.1761505620. The cubic root of 258243 is about 63.6809479154.

The spelling of 258243 in words is "two hundred fifty-eight thousand, two hundred forty-three".