Il numero romano MMDLVI nel sistema decimale vale: 2556.
MMDLVI in latino si scrive duo milia quingenti quinquaginta sex,
mentre in italiano duemilacinquecentocinquantasei.
MMDXXXVII, MMDXXXVIII, MMDXXXIX, MMDXL, MMDXLI, MMDXLII, MMDXLIII, MMDXLIV, MMDXLV, MMDXLVI, MMDXLVII, MMDXLVIII, MMDXLIX, MMDL, MMDLI, MMDLII, MMDLIII, MMDLIV, MMDLV, MMDLVII, MMDLVIII, MMDLIX, MMDLX, MMDLXI, MMDLXII, MMDLXIII, MMDLXIV, MMDLXV, MMDLXVI, MMDLXVII, MMDLXVIII, MMDLXIX, MMDLXX, MMDLXXI, MMDLXXII, MMDLXXIII, MMDLXXIV, MMDLXXV