2727161 has 4 divisors (see below), whose sum is σ = 2739300. Its totient is φ = 2715024.

The previous prime is 2727149. The next prime is 2727173. The reversal of 2727161 is 1617272.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2727149) and next prime (2727173).

It can be written as a sum of positive squares in 2 ways, for example, as 1836025 + 891136 = 1355^2 + 944^2 .

It is not a de Polignac number, because 2727161 - 2⁶ = 2727097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2727161.

It is not an unprimeable number, because it can be changed into a prime (2727121) 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 3 ways as a sum of consecutive naturals, for example, 5726 + ... + 6183.

It is an arithmetic number, because the mean of its divisors is an integer number (684825).

2^2727161 is an apocalyptic number.

It is an amenable number.

2727161 is a deficient number, since it is larger than the sum of its proper divisors (12139).

2727161 is a wasteful number, since it uses less digits than its factorization.

2727161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12138.

The product of its digits is 1176, while the sum is 26.

The square root of 2727161 is about 1651.4118202314. The cubic root of 2727161 is about 139.7130346429.

Multiplying 2727161 by its sum of digits (26), we get a triangular number (70906186 = T₁₁₉₀₈).

The spelling of 2727161 in words is "two million, seven hundred twenty-seven thousand, one hundred sixty-one".