Il numero romano MDCLVII nel sistema decimale vale: 1657.
MDCLVII in latino si scrive mille sescenti quinquaginta septem,
mentre in italiano milleseicentocinquantasette.
MDCXXXVIII, MDCXXXIX, MDCXL, MDCXLI, MDCXLII, MDCXLIII, MDCXLIV, MDCXLV, MDCXLVI, MDCXLVII, MDCXLVIII, MDCXLIX, MDCL, MDCLI, MDCLII, MDCLIII, MDCLIV, MDCLV, MDCLVI, MDCLVIII, MDCLIX, MDCLX, MDCLXI, MDCLXII, MDCLXIII, MDCLXIV, MDCLXV, MDCLXVI, MDCLXVII, MDCLXVIII, MDCLXIX, MDCLXX, MDCLXXI, MDCLXXII, MDCLXXIII, MDCLXXIV, MDCLXXV, MDCLXXVI