Il numero romano MDCCLI nel sistema decimale vale: 1751.
MDCCLI in latino si scrive mille septingenti quinquaginta unus,
mentre in italiano millesettecentocinquantuno.
MDCCXXXII, MDCCXXXIII, MDCCXXXIV, MDCCXXXV, MDCCXXXVI, MDCCXXXVII, MDCCXXXVIII, MDCCXXXIX, MDCCXL, MDCCXLI, MDCCXLII, MDCCXLIII, MDCCXLIV, MDCCXLV, MDCCXLVI, MDCCXLVII, MDCCXLVIII, MDCCXLIX, MDCCL, MDCCLII, MDCCLIII, MDCCLIV, MDCCLV, MDCCLVI, MDCCLVII, MDCCLVIII, MDCCLIX, MDCCLX, MDCCLXI, MDCCLXII, MDCCLXIII, MDCCLXIV, MDCCLXV, MDCCLXVI, MDCCLXVII, MDCCLXVIII, MDCCLXIX, MDCCLXX