205071 has 8 divisors (see below), whose sum is σ = 289584. Its totient is φ = 128640.

The previous prime is 205069. The next prime is 205081. The reversal of 205071 is 170502.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 205071 - 2¹ = 205069 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 205071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205031) 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, 1960 + ... + 2061.

It is an arithmetic number, because the mean of its divisors is an integer number (36198).

2²⁰⁵⁰⁷¹ is an apocalyptic number.

205071 is a deficient number, since it is larger than the sum of its proper divisors (84513).

205071 is a wasteful number, since it uses less digits than its factorization.

205071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4041.

The product of its (nonzero) digits is 70, while the sum is 15.

The square root of 205071 is about 452.8476565027. The cubic root of 205071 is about 58.9704918037.

Adding to 205071 its reverse (170502), we get a palindrome (375573).

The spelling of 205071 in words is "two hundred five thousand, seventy-one".