general_fact: 4055 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 4055 is the smallest number whose cube contains six 6's.
trivia: 4055 is an uninteresting number.
historical_date: February 6th is the day in 1922 that the Washington Naval Treaty is signed in Washington, D.C., limiting the naval armaments of United States, Britain, Japan, France, and Italy.