Il numero romano MCDLVI nel sistema decimale vale: 1456.
MCDLVI in latino si scrive mille quadringenti quinquaginta sex,
mentre in italiano millequattrocentocinquantasei.
MCDXXXVII, MCDXXXVIII, MCDXXXIX, MCDXL, MCDXLI, MCDXLII, MCDXLIII, MCDXLIV, MCDXLV, MCDXLVI, MCDXLVII, MCDXLVIII, MCDXLIX, MCDL, MCDLI, MCDLII, MCDLIII, MCDLIV, MCDLV, MCDLVII, MCDLVIII, MCDLIX, MCDLX, MCDLXI, MCDLXII, MCDLXIII, MCDLXIV, MCDLXV, MCDLXVI, MCDLXVII, MCDLXVIII, MCDLXIX, MCDLXX, MCDLXXI, MCDLXXII, MCDLXXIII, MCDLXXIV, MCDLXXV