27291 has 8 divisors (see below), whose sum is σ = 39744. Its totient is φ = 16520.

The previous prime is 27283. The next prime is 27299. The reversal of 27291 is 19272.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (27283) and next prime (27299).

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

It is a cyclic number.

It is not a de Polignac number, because 27291 - 2³ = 27283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27299) 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, 381 + ... + 446.

It is an arithmetic number, because the mean of its divisors is an integer number (4968).

2²⁷²⁹¹ is an apocalyptic number.

27291 is a deficient number, since it is larger than the sum of its proper divisors (12453).

27291 is a wasteful number, since it uses less digits than its factorization.

27291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841.

The product of its digits is 252, while the sum is 21.

The square root of 27291 is about 165.1998789346. The cubic root of 27291 is about 30.1073928780.

It can be divided in two parts, 272 and 91, that added together give a palindrome (363).

The spelling of 27291 in words is "twenty-seven thousand, two hundred ninety-one".