Il numero romano MCCLVII nel sistema decimale vale: 1257.
MCCLVII in latino si scrive mille ducenti quinquaginta septem,
mentre in italiano milleduecentocinquantasette.
MCCXXXVIII, MCCXXXIX, MCCXL, MCCXLI, MCCXLII, MCCXLIII, MCCXLIV, MCCXLV, MCCXLVI, MCCXLVII, MCCXLVIII, MCCXLIX, MCCL, MCCLI, MCCLII, MCCLIII, MCCLIV, MCCLV, MCCLVI, MCCLVIII, MCCLIX, MCCLX, MCCLXI, MCCLXII, MCCLXIII, MCCLXIV, MCCLXV, MCCLXVI, MCCLXVII, MCCLXVIII, MCCLXIX, MCCLXX, MCCLXXI, MCCLXXII, MCCLXXIII, MCCLXXIV, MCCLXXV, MCCLXXVI