1. A cell analyzing apparatus comprising: a histogram acquirer which is configured to perform measurement of a number of nuclear stained cells, and which, by using a result of the measurement, is configured to acquire a histogram indicating a fluorescence intensity; and an analysis controller which is configured to apply frequency analysis on data of the histogram acquired by the histogram acquirer, and which is configured to determine existence/nonexistence of cancer cells based on a result of the frequency analysis, wherein the frequency analysis is a Fast Fourier Transform applied to the data of the histogram relating to the fluorescence intensity and the number of nuclear stained cells, and wherein the analysis controller determines the existence/nonexistence of the cancer cells by comparing an area under a curve of a waveform which is obtained from the result of the frequency analysis, with a predetermined threshold.