258155 has 4 divisors (see below), whose sum is σ = 309792. Its totient is φ = 206520.

The previous prime is 258143. The next prime is 258157. The reversal of 258155 is 551852.

258155 is an esthetic number in base 7, because in such base its adjacent digits differ by 1.

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

It is not a de Polignac number, because 258155 - 2¹⁴ = 241771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (258157) 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 in 3 ways as a sum of consecutive naturals, for example, 25811 + ... + 25820.

It is an arithmetic number, because the mean of its divisors is an integer number (77448).

2²⁵⁸¹⁵⁵ is an apocalyptic number.

258155 is a deficient number, since it is larger than the sum of its proper divisors (51637).

258155 is an equidigital number, since it uses as much as digits as its factorization.

258155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51636.

The product of its digits is 2000, while the sum is 26.

The square root of 258155 is about 508.0895590346. The cubic root of 258155 is about 63.6737136954.

The spelling of 258155 in words is "two hundred fifty-eight thousand, one hundred fifty-five".