2772281 has 2 divisors, whose sum is σ = 2772282. Its totient is φ = 2772280.

The previous prime is 2772257. The next prime is 2772293. The reversal of 2772281 is 1822772.

2772281 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., 2202256 + 570025 = 1484^2 + 755^2 .

It is a cyclic number.

It is not a de Polignac number, because 2772281 - 2¹⁰ = 2771257 is a prime.

It is a super-2 number, since 2×2772281² = 15371083885922, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2¹⁴ + 7⁵ + 7⁶ + 2¹⁸ + 2²¹ + 8⁶ + 1 .

It is not a weakly prime, because it can be changed into another prime (2772481) 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, 1386140 + 1386141.

It is an arithmetic number, because the mean of its divisors is an integer number (1386141).

2^2772281 is an apocalyptic number.

It is an amenable number.

2772281 is a deficient number, since it is larger than the sum of its proper divisors (1).

2772281 is an equidigital number, since it uses as much as digits as its factorization.

2772281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3136, while the sum is 29.

The square root of 2772281 is about 1665.0168167319. The cubic root of 2772281 is about 140.4793264162.

The spelling of 2772281 in words is "two million, seven hundred seventy-two thousand, two hundred eighty-one".