258149 has 4 divisors (see below), whose sum is σ = 265164. Its totient is φ = 251136.

The previous prime is 258143. The next prime is 258157. The reversal of 258149 is 941852.

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

It can be written as a sum of positive squares in 2 ways, for example, as 145924 + 112225 = 382^2 + 335^2 .

It is a cyclic number.

It is not a de Polignac number, because 258149 - 2⁸ = 257893 is a prime.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258143) 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, 3452 + ... + 3525.

It is an arithmetic number, because the mean of its divisors is an integer number (66291).

2²⁵⁸¹⁴⁹ is an apocalyptic number.

It is an amenable number.

258149 is a deficient number, since it is larger than the sum of its proper divisors (7015).

258149 is an equidigital number, since it uses as much as digits as its factorization.

258149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7014.

The product of its digits is 2880, while the sum is 29.

The square root of 258149 is about 508.0836545294. The cubic root of 258149 is about 63.6732203932.

The spelling of 258149 in words is "two hundred fifty-eight thousand, one hundred forty-nine".