258499 has 2 divisors, whose sum is σ = 258500. Its totient is φ = 258498.

The previous prime is 258491. The next prime is 258521. The reversal of 258499 is 994852.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 258499 - 2³ = 258491 is a prime.

It is a zygodrome in base 2.

It is not a weakly prime, because it can be changed into another prime (258491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129249 + 129250.

It is an arithmetic number, because the mean of its divisors is an integer number (129250).

2²⁵⁸⁴⁹⁹ is an apocalyptic number.

258499 is a deficient number, since it is larger than the sum of its proper divisors (1).

258499 is an equidigital number, since it uses as much as digits as its factorization.

258499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 37.

The square root of 258499 is about 508.4279693329. The cubic root of 258499 is about 63.7019835792.

It can be divided in two parts, 258 and 499, that added together give a palindrome (757).

The spelling of 258499 in words is "two hundred fifty-eight thousand, four hundred ninety-nine".