Get current Z rotation of transform in degrees

I use the following code to rotate my 2d sprite:

 transform.Rotate (Vector3.back * -5f);

The unity editor shows my Z axis rotation in degrees (90, 180, 360 etc.) but If I try checking the transform.rotation.eulerAngles.z I get a long decimal number like 0.146... I know there must be a property or a bit of math I can do on this value to get the degrees. Any ideas how I can get the rotation in a degree amount?