Subtracting 2773 from its reverse (3772), we obtain a palindrome (999).
It is the 22-nd star number.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.
It is a cyclic number.
It is a d-powerful number, because it can be written as 2 + 73 + 74 + 33 .
It is a Duffinian number.
2773 is a lucky number.
It is a self number, because there is not a number n which added to its sum of digits gives 2773.
It is a congruent number.
It is an amenable number.
2773 is an equidigital number, since it uses as much as digits as its factorization.
2773 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 106.
The square root of 2773 is about 52.6592821827. The cubic root of 2773 is about 14.0491469955.
The spelling of 2773 in words is "two thousand, seven hundred seventy-three", and thus it is an iban number.