2774376221 has 2 divisors, whose sum is σ = 2774376222. Its totient is φ = 2774376220.

The previous prime is 2774376193. The next prime is 2774376223. The reversal of 2774376221 is 1226734772.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2762028025 + 12348196 = 52555^2 + 3514^2 .

It is a cyclic number.

It is not a de Polignac number, because 2774376221 - 2¹⁴ = 2774359837 is a prime.

Together with 2774376223, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2774376223) 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, 1387188110 + 1387188111.

It is an arithmetic number, because the mean of its divisors is an integer number (1387188111).

Almost surely, 2^2774376221 is an apocalyptic number.

It is an amenable number.

2774376221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2774376221 is an equidigital number, since it uses as much as digits as its factorization.

2774376221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 197568, while the sum is 41.

The square root of 2774376221 is about 52672.3477832534. The cubic root of 2774376221 is about 1405.1470776406.

The spelling of 2774376221 in words is "two billion, seven hundred seventy-four million, three hundred seventy-six thousand, two hundred twenty-one".