2776221247 has 2 divisors, whose sum is σ = 2776221248. Its totient is φ = 2776221246.

The previous prime is 2776221211. The next prime is 2776221263. The reversal of 2776221247 is 7421226772.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2776221247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2776225247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1388110623 + 1388110624.

It is an arithmetic number, because the mean of its divisors is an integer number (1388110624).

Almost surely, 2^2776221247 is an apocalyptic number.

2776221247 is a deficient number, since it is larger than the sum of its proper divisors (1).

2776221247 is an equidigital number, since it uses as much as digits as its factorization.

2776221247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 131712, while the sum is 40.

The square root of 2776221247 is about 52689.8590527627. The cubic root of 2776221247 is about 1405.4584939975.

The spelling of 2776221247 in words is "two billion, seven hundred seventy-six million, two hundred twenty-one thousand, two hundred forty-seven".