2791181 has 2 divisors, whose sum is σ = 2791182. Its totient is φ = 2791180.

The previous prime is 2791141. The next prime is 2791183. The reversal of 2791181 is 1811972.

2791181 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., 2775556 + 15625 = 1666^2 + 125^2 .

It is a cyclic number.

It is not a de Polignac number, because 2791181 - 2¹⁰ = 2790157 is a prime.

It is a super-2 number, since 2×2791181² = 15581382749522, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 2791183, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2791183) 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, 1395590 + 1395591.

It is an arithmetic number, because the mean of its divisors is an integer number (1395591).

2^2791181 is an apocalyptic number.

It is an amenable number.

2791181 is a deficient number, since it is larger than the sum of its proper divisors (1).

2791181 is an equidigital number, since it uses as much as digits as its factorization.

2791181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1008, while the sum is 29.

The square root of 2791181 is about 1670.6827945484. The cubic root of 2791181 is about 140.7978425171.

The spelling of 2791181 in words is "two million, seven hundred ninety-one thousand, one hundred eighty-one".