Digital cameras of this age and type have digital zooms of between 1x and 120x, and the average digital zoom is 6.6x. The HP P550 has a quite big digital zoom (5 times zoom factor) compared to most of the other comparable spec cameras that have been around for around the same time as this camera.
There are a number of alternative 5x digital zoom digital cameras currently available that you might want to consider including because of their better review scores, the DV150F, or the SAMSUNG ST96 both from Samsung.
If this camera digital zoom is not big enough for you then you might want to consider the J1455 (5.7x and higher rated), or the A1455 (5.7x and higher rated) both from GE or the Kodak Pixpro FZ41 (6x and higher rated).
What does "digital zoom" mean?