Il numero romano MMDCCXV nel sistema decimale vale: 2715.
MMDCCXV in latino si scrive duo milia septingenti quindecim,
mentre in italiano duemilasettecentoquindici.
MMDCXCVI, MMDCXCVII, MMDCXCVIII, MMDCXCIX, MMDCC, MMDCCI, MMDCCII, MMDCCIII, MMDCCIV, MMDCCV, MMDCCVI, MMDCCVII, MMDCCVIII, MMDCCIX, MMDCCX, MMDCCXI, MMDCCXII, MMDCCXIII, MMDCCXIV, MMDCCXVI, MMDCCXVII, MMDCCXVIII, MMDCCXIX, MMDCCXX, MMDCCXXI, MMDCCXXII, MMDCCXXIII, MMDCCXXIV, MMDCCXXV, MMDCCXXVI, MMDCCXXVII, MMDCCXXVIII, MMDCCXXIX, MMDCCXXX, MMDCCXXXI, MMDCCXXXII, MMDCCXXXIII, MMDCCXXXIV