2183

2183 = 37 x 59.

2183 is a number that cannot be written as a sum of three squares.

2183 is 2222212 in base 3.

2183 is a number n such that n² + n + 2 is a palindrome: 2183² + 2183 + 2 = 4767674.

NGC 2183 is a nebula in the constellation Monceros. This cloud of dust resides on the edge of the outer spiral arm of our galaxy.

Source: Positive Integers