205158 has 16 divisors (see below), whose sum is σ = 423936. Its totient is φ = 66120.

The previous prime is 205157. The next prime is 205171. The reversal of 205158 is 851502.

It is a Curzon number.

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 205158.

It is not an unprimeable number, because it can be changed into a prime (205151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 366 + ... + 737.

It is an arithmetic number, because the mean of its divisors is an integer number (26496).

2²⁰⁵¹⁵⁸ is an apocalyptic number.

205158 is an abundant number, since it is smaller than the sum of its proper divisors (218778).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205158 is a wasteful number, since it uses less digits than its factorization.

205158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1139.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 205158 is about 452.9437051114. The cubic root of 205158 is about 58.9788299036.

It can be divided in two parts, 205 and 158, that added together give a palindrome (363).

The spelling of 205158 in words is "two hundred five thousand, one hundred fifty-eight".