2761181 has 2 divisors, whose sum is σ = 2761182. Its totient is φ = 2761180.

The previous prime is 2761169. The next prime is 2761183. The reversal of 2761181 is 1811672.

2761181 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2544025 + 217156 = 1595^2 + 466^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2761181 is a prime.

It is a super-2 number, since 2×2761181² = 15248241029522, which contains 22 as substring.

Together with 2761183, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2761181.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2761183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1380590 + 1380591.

It is an arithmetic number, because the mean of its divisors is an integer number (1380591).

2^2761181 is an apocalyptic number.

It is an amenable number.

2761181 is a deficient number, since it is larger than the sum of its proper divisors (1).

2761181 is an equidigital number, since it uses as much as digits as its factorization.

2761181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 672, while the sum is 26.

The square root of 2761181 is about 1661.6801738000. The cubic root of 2761181 is about 140.2915861525.

The spelling of 2761181 in words is "two million, seven hundred sixty-one thousand, one hundred eighty-one".