27055681 has 4 divisors (see below), whose sum is σ = 27067392. Its totient is φ = 27043972.

The previous prime is 27055669. The next prime is 27055697. The reversal of 27055681 is 18655072.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 27055681 - 2¹⁷ = 26924609 is a prime.

It is a super-2 number, since 2×27055681² = 1464019748747522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27055631) 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, 1105 + ... + 7438.

It is an arithmetic number, because the mean of its divisors is an integer number (6766848).

Almost surely, 2^27055681 is an apocalyptic number.

It is an amenable number.

27055681 is a deficient number, since it is larger than the sum of its proper divisors (11711).

27055681 is an equidigital number, since it uses as much as digits as its factorization.

27055681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11710.

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 27055681 is about 5201.5075699262. The cubic root of 27055681 is about 300.2060843243.

The spelling of 27055681 in words is "twenty-seven million, fifty-five thousand, six hundred eighty-one".