Help with understanding Echo Dot software versions

[PT_artist]

My fairly new Amazon Dot shows the software version number:    564186420

Amazon's software updates page reads: 
            Echo Dot (2nd Generation) Latest Software Version: 561179520

Does that mean my software is older?  Or does it mean Amazon is not updating the version on the updates page?  Or something else?

I am confused   

[Nubble]

The higher the number, the later (newer) the software version. At times the web page is not immediately updated to reflect the change. Updates to your DOT are automatic (you cannot control through a manual process) and can take a week to be fully distributed. Also, its possible that the US and UK versions may not update simultaneously.