Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
quinquāginta, num. adj., fifty: quinquaginta et quattuor, Plaut. Mil. 3, 1, 35: famulae, Verg. A. 1, 703: milia, Cic. Att. 4, 2, 5; Pomp. ap. Non. p. 280, 18; Col. 12, 23, 1.