It is a semiprime because it is the product of two primes.
It is a D-number.
It is a Duffinian number.
2271 is a lucky number.
It is a plaindrome in base 16.
It is a nialpdrome in base 14.
It is a congruent number.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 2271.
22271 is an apocalyptic number.
2271 is an equidigital number, since it uses as much as digits as its factorization.
2271 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 760.
The square root of 2271 is about 47.6550102298. The cubic root of 2271 is about 13.1443478820.
Adding to 2271 its reverse (1722), we get a palindrome (3993).
The spelling of 2271 in words is "two thousand, two hundred seventy-one", and thus it is an iban number.