3773281 has 2 divisors, whose sum is σ = 3773282. Its totient is φ = 3773280.

The previous prime is 3773279. The next prime is 3773291. The reversal of 3773281 is 1823773.

3773281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2689600 + 1083681 = 1640^2 + 1041^2 .

It is a cyclic number.

It is not a de Polignac number, because 3773281 - 2¹ = 3773279 is a prime.

It is a super-2 number, since 2×3773281² = 28475299009922, which contains 22 as substring.

Together with 3773279, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (3773221) 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, 1886640 + 1886641.

It is an arithmetic number, because the mean of its divisors is an integer number (1886641).

Almost surely, 2^3773281 is an apocalyptic number.

It is an amenable number.

3773281 is a deficient number, since it is larger than the sum of its proper divisors (1).

3773281 is an equidigital number, since it uses as much as digits as its factorization.

3773281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7056, while the sum is 31.

The square root of 3773281 is about 1942.4935006326. The cubic root of 3773281 is about 155.6824710454.

The spelling of 3773281 in words is "three million, seven hundred seventy-three thousand, two hundred eighty-one".