205163 has 12 divisors (see below), whose sum is σ = 246240. Its totient is φ = 170352.

The previous prime is 205157. The next prime is 205171. The reversal of 205163 is 361502.

205163 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 205163 - 2¹⁴ = 188779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2558 + ... + 2636.

It is an arithmetic number, because the mean of its divisors is an integer number (20520).

2²⁰⁵¹⁶³ is an apocalyptic number.

205163 is a deficient number, since it is larger than the sum of its proper divisors (41077).

205163 is an equidigital number, since it uses as much as digits as its factorization.

205163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146 (or 139 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 205163 is about 452.9492245274. The cubic root of 205163 is about 58.9793090331.

Adding to 205163 its reverse (361502), we get a palindrome (566665).

The spelling of 205163 in words is "two hundred five thousand, one hundred sixty-three".