Adding to 2251 its reverse (1522), we get a palindrome (3773).
Subtracting from 2251 its reverse (1522), we obtain a 6-th power (729 = 36).
2251 is nontrivially palindromic in base 14.
2251 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 is a cyclic number.
It is a Chen prime.
2251 is an undulating number in base 14.
2251 is a lucky number.
It is a plaindrome in base 12.
22251 is an apocalyptic number.
2251 is an equidigital number, since it uses as much as digits as its factorization.
2251 is an evil number, because the sum of its binary digits is even.
The square root of 2251 is about 47.4447046571. Note that the first 3 decimals coincide. The cubic root of 2251 is about 13.1056479734.
The spelling of 2251 in words is "two thousand, two hundred fifty-one".