9957

9957 = 3 x 3319.

9957 uses the digits 0, 1, 3, and 4 in bases 6 (114033) and 7 (41013).

9957 is the number of homeomorphically irreducible general graphs on 6 labeled nodes and with 5 edges (A060581).

9957 Raffaellosanti is a main-belt asteroid discovered in 1991 and named for Raffaello Sanzio (Raphael), a master of the Italian Renaissance.

Source: OEIS