27591 has 8 divisors (see below), whose sum is σ = 39024. Its totient is φ = 17280.

The previous prime is 27583. The next prime is 27611. The reversal of 27591 is 19572.

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

It is not a de Polignac number, because 27591 - 2³ = 27583 is a prime.

It is a super-2 number, since 2×27591² = 1522526562, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27541) 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, 220 + ... + 321.

It is an arithmetic number, because the mean of its divisors is an integer number (4878).

2²⁷⁵⁹¹ is an apocalyptic number.

27591 is a deficient number, since it is larger than the sum of its proper divisors (11433).

27591 is a wasteful number, since it uses less digits than its factorization.

27591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561.

The product of its digits is 630, while the sum is 24.

The square root of 27591 is about 166.1053882329. The cubic root of 27591 is about 30.2173109530.

The spelling of 27591 in words is "twenty-seven thousand, five hundred ninety-one".