258503 has 4 divisors (see below), whose sum is σ = 295440. Its totient is φ = 221568.

The previous prime is 258499. The next prime is 258521. The reversal of 258503 is 305852.

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 258503 - 2² = 258499 is a prime.

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

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 258503.

It is not an unprimeable number, because it can be changed into a prime (258563) 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, 18458 + ... + 18471.

It is an arithmetic number, because the mean of its divisors is an integer number (73860).

2²⁵⁸⁵⁰³ is an apocalyptic number.

258503 is a deficient number, since it is larger than the sum of its proper divisors (36937).

258503 is an equidigital number, since it uses as much as digits as its factorization.

258503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36936.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 258503 is about 508.4319030116. The cubic root of 258503 is about 63.7023121512.

The spelling of 258503 in words is "two hundred fifty-eight thousand, five hundred three".