It is a happy number.
2257 is nontrivially palindromic in base 6.
2257 is an esthetic number in base 8, because in such base its adjacent digits differ by 1.
It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 7522 = 2 ⋅3761.
It is a cyclic number.
It is the 48-th Hogben number.
It is a Duffinian number.
2257 is a lucky number.
It is a plaindrome in base 10.
It is a nialpdrome in base 8 and base 14.
It is a self number, because there is not a number n which added to its sum of digits gives 2257.
It is a congruent number.
It is an amenable number.
2257 is an equidigital number, since it uses as much as digits as its factorization.
2257 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 98.
The square root of 2257 is about 47.5078940809. The cubic root of 2257 is about 13.1172819325.
Adding to 2257 its reverse (7522), we get a palindrome (9779).
The spelling of 2257 in words is "two thousand, two hundred fifty-seven".