27427 has 2 divisors, whose sum is σ = 27428. Its totient is φ = 27426.

The previous prime is 27409. The next prime is 27431. The reversal of 27427 is 72472.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27427 - 2⁷ = 27299 is a prime.

27427 is a lucky number.

It is a nialpdrome in base 8.

It is a junction number, because it is equal to n+sod(n) for n = 27398 and 27407.

It is not a weakly prime, because it can be changed into another prime (27407) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13713 + 13714.

It is an arithmetic number, because the mean of its divisors is an integer number (13714).

2²⁷⁴²⁷ is an apocalyptic number.

27427 is a deficient number, since it is larger than the sum of its proper divisors (1).

27427 is an equidigital number, since it uses as much as digits as its factorization.

27427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 784, while the sum is 22.

The square root of 27427 is about 165.6109899735. The cubic root of 27427 is about 30.1573217021.

Adding to 27427 its reverse (72472), we get a palindrome (99899).

It can be divided in two parts, 27 and 427, that added together give a palindrome (454).

The spelling of 27427 in words is "twenty-seven thousand, four hundred twenty-seven", and thus it is an iban number.