2771645251 has 2 divisors, whose sum is σ = 2771645252. Its totient is φ = 2771645250.

The previous prime is 2771645221. The next prime is 2771645287. The reversal of 2771645251 is 1525461772.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2771645251 - 2¹⁵ = 2771612483 is a prime.

It is not a weakly prime, because it can be changed into another prime (2771645221) 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, 1385822625 + 1385822626.

It is an arithmetic number, because the mean of its divisors is an integer number (1385822626).

Almost surely, 2^2771645251 is an apocalyptic number.

2771645251 is a deficient number, since it is larger than the sum of its proper divisors (1).

2771645251 is an equidigital number, since it uses as much as digits as its factorization.

2771645251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 117600, while the sum is 40.

The square root of 2771645251 is about 52646.4172665149. The cubic root of 2771645251 is about 1404.6858719469.

The spelling of 2771645251 in words is "two billion, seven hundred seventy-one million, six hundred forty-five thousand, two hundred fifty-one".