Hi, the way a bike is measured is from the centre of the bottom bracket to the centre tube which this measures 56cm bike.
So the measurements you're asking for a can vary. The fixed measurement of the top tube is 57cm.
The seat stem is adjustable to that can change, as is the front of the saddle to the centre of the hadnlebar stem.
To give you an idea I am a little under 6ft and it fits me, but would probably not suit someone under 5'10". It would suite someone up to 6'1" as the seat stem has more to play with, or you could get an even longer one off ebay.