I am five foot 9 and ride 52-56 cm frames with my road bike being 555 (square) and most of my regular rides being 55... most can ride within a certain size range and not all frames are square... my 52 cm road frame has a 54cm top tube.

Your total height might suggest that you should ride a 58 but some people are proportioned differently with shorter than average legs and longer torsos relative to their total height and the biggest issue I find with fitting folks like this is that they might find things cramped up top or need to fit a longer stem to adjust for a longer reach.

Stand over is not as critical as the top tube measurement although one should be able to stand over their bike without crushing their bits.