27157 has 4 divisors (see below), whose sum is σ = 29260. Its totient is φ = 25056.

The previous prime is 27143. The next prime is 27179. The reversal of 27157 is 75172.

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

It can be written as a sum of positive squares in 2 ways, for example, as 14161 + 12996 = 119^2 + 114^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27157 is a prime.

It is a Duffinian number.

27157 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1032 + ... + 1057.

It is an arithmetic number, because the mean of its divisors is an integer number (7315).

2²⁷¹⁵⁷ is an apocalyptic number.

It is an amenable number.

27157 is a deficient number, since it is larger than the sum of its proper divisors (2103).

27157 is a wasteful number, since it uses less digits than its factorization.

27157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2102.

The product of its digits is 490, while the sum is 22.

The square root of 27157 is about 164.7938105634. The cubic root of 27157 is about 30.0580358039.

The spelling of 27157 in words is "twenty-seven thousand, one hundred fifty-seven".