158285 has 4 divisors (see below), whose sum is σ = 189948. Its totient is φ = 126624.

The previous prime is 158269. The next prime is 158293. The reversal of 158285 is 582851.

158285 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 67081 + 91204 = 259^2 + 302^2 .

It is a cyclic number.

It is not a de Polignac number, because 158285 - 2⁴ = 158269 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15824 + ... + 15833.

It is an arithmetic number, because the mean of its divisors is an integer number (47487).

2¹⁵⁸²⁸⁵ is an apocalyptic number.

It is an amenable number.

158285 is a deficient number, since it is larger than the sum of its proper divisors (31663).

158285 is an equidigital number, since it uses as much as digits as its factorization.

158285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31662.

The product of its digits is 3200, while the sum is 29.

The square root of 158285 is about 397.8504744248. The cubic root of 158285 is about 54.0936873858.

The spelling of 158285 in words is "one hundred fifty-eight thousand, two hundred eighty-five".