2771345281 has 2 divisors, whose sum is σ = 2771345282. Its totient is φ = 2771345280.

The previous prime is 2771345257. The next prime is 2771345323. The reversal of 2771345281 is 1825431772.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2771074881 + 270400 = 52641^2 + 520^2 .

It is a cyclic number.

It is not a de Polignac number, because 2771345281 - 2⁷ = 2771345153 is a prime.

It is a super-2 number, since 2×2771345281² = 15360709333041937922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2771345081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1385672640 + 1385672641.

It is an arithmetic number, because the mean of its divisors is an integer number (1385672641).

Almost surely, 2^2771345281 is an apocalyptic number.

It is an amenable number.

2771345281 is a deficient number, since it is larger than the sum of its proper divisors (1).

2771345281 is an equidigital number, since it uses as much as digits as its factorization.

2771345281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 94080, while the sum is 40.

The square root of 2771345281 is about 52643.5682776158. The cubic root of 2771345281 is about 1404.6351946073.

The spelling of 2771345281 in words is "two billion, seven hundred seventy-one million, three hundred forty-five thousand, two hundred eighty-one".