205271 has 4 divisors (see below), whose sum is σ = 223944. Its totient is φ = 186600.

The previous prime is 205267. The next prime is 205297. The reversal of 205271 is 172502.

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

It is a cyclic number.

It is not a de Polignac number, because 205271 - 2² = 205267 is a prime.

It is a super-3 number, since 3×205271³ = 25948009533352533, which contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9320 + ... + 9341.

It is an arithmetic number, because the mean of its divisors is an integer number (55986).

2²⁰⁵²⁷¹ is an apocalyptic number.

205271 is a deficient number, since it is larger than the sum of its proper divisors (18673).

205271 is a wasteful number, since it uses less digits than its factorization.

205271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18672.

The product of its (nonzero) digits is 140, while the sum is 17.

The square root of 205271 is about 453.0684275030. The cubic root of 205271 is about 58.9896563309.

Adding to 205271 its reverse (172502), we get a palindrome (377773).

It can be divided in two parts, 205 and 271, that multiplied together give a palindrome (55555).

The spelling of 205271 in words is "two hundred five thousand, two hundred seventy-one".