27161105 has 4 divisors (see below), whose sum is σ = 32593332. Its totient is φ = 21728880.

The previous prime is 27161059. The next prime is 27161107. The reversal of 27161105 is 50116172.

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 6431296 + 20729809 = 2536^2 + 4553^2 .

It is not a de Polignac number, because 27161105 - 2¹⁴ = 27144721 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (27161107) 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, 2716106 + ... + 2716115.

It is an arithmetic number, because the mean of its divisors is an integer number (8148333).

Almost surely, 2^27161105 is an apocalyptic number.

It is an amenable number.

27161105 is a deficient number, since it is larger than the sum of its proper divisors (5432227).

27161105 is an equidigital number, since it uses as much as digits as its factorization.

27161105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5432226.

The product of its (nonzero) digits is 420, while the sum is 23.

The square root of 27161105 is about 5211.6317022599. The cubic root of 27161105 is about 300.5955023263.

Adding to 27161105 its reverse (50116172), we get a palindrome (77277277).

The spelling of 27161105 in words is "twenty-seven million, one hundred sixty-one thousand, one hundred five".