27132881 has 4 divisors (see below), whose sum is σ = 27213732. Its totient is φ = 27052032.

The previous prime is 27132839. The next prime is 27132883. The reversal of 27132881 is 18823172.

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 2531281 + 24601600 = 1591^2 + 4960^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27132881 is a prime.

It is a super-2 number, since 2×27132881² = 1472386462720322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27132883) 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, 39920 + ... + 40593.

It is an arithmetic number, because the mean of its divisors is an integer number (6803433).

Almost surely, 2^27132881 is an apocalyptic number.

It is an amenable number.

27132881 is a deficient number, since it is larger than the sum of its proper divisors (80851).

27132881 is an equidigital number, since it uses as much as digits as its factorization.

27132881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80850.

The product of its digits is 5376, while the sum is 32.

The square root of 27132881 is about 5208.9232092631. The cubic root of 27132881 is about 300.4913466740.

The spelling of 27132881 in words is "twenty-seven million, one hundred thirty-two thousand, eight hundred eighty-one".