Il numero romano MCDLI nel sistema decimale vale: 1451.
MCDLI in latino si scrive mille quadringenti quinquaginta unus,
mentre in italiano millequattrocentocinquantuno.
MCDXXXII, MCDXXXIII, MCDXXXIV, MCDXXXV, MCDXXXVI, MCDXXXVII, MCDXXXVIII, MCDXXXIX, MCDXL, MCDXLI, MCDXLII, MCDXLIII, MCDXLIV, MCDXLV, MCDXLVI, MCDXLVII, MCDXLVIII, MCDXLIX, MCDL, MCDLII, MCDLIII, MCDLIV, MCDLV, MCDLVI, MCDLVII, MCDLVIII, MCDLIX, MCDLX, MCDLXI, MCDLXII, MCDLXIII, MCDLXIV, MCDLXV, MCDLXVI, MCDLXVII, MCDLXVIII, MCDLXIX, MCDLXX