271591 has 4 divisors (see below), whose sum is σ = 280384. Its totient is φ = 262800.

The previous prime is 271573. The next prime is 271597. The reversal of 271591 is 195172.

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 271591 - 2⁷ = 271463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (271597) 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, 4350 + ... + 4411.

It is an arithmetic number, because the mean of its divisors is an integer number (70096).

2²⁷¹⁵⁹¹ is an apocalyptic number.

271591 is a deficient number, since it is larger than the sum of its proper divisors (8793).

271591 is an equidigital number, since it uses as much as digits as its factorization.

271591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8792.

The product of its digits is 630, while the sum is 25.

The square root of 271591 is about 521.1439340528. The cubic root of 271591 is about 64.7597442141.

The spelling of 271591 in words is "two hundred seventy-one thousand, five hundred ninety-one".