27139161 has 16 divisors (see below), whose sum is σ = 41759744. Its totient is φ = 15356304.

The previous prime is 27139153. The next prime is 27139181. The reversal of 27139161 is 16193172.

It is not a de Polignac number, because 27139161 - 2³ = 27139153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27139121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4111 + ... + 8436.

It is an arithmetic number, because the mean of its divisors is an integer number (2609984).

Almost surely, 2^27139161 is an apocalyptic number.

27139161 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

27139161 is a deficient number, since it is larger than the sum of its proper divisors (14620583).

27139161 is a wasteful number, since it uses less digits than its factorization.

27139161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12660.

The product of its digits is 2268, while the sum is 30.

The square root of 27139161 is about 5209.5259861143. The cubic root of 27139161 is about 300.5145281426.

The spelling of 27139161 in words is "twenty-seven million, one hundred thirty-nine thousand, one hundred sixty-one".