Yes, it is rooted. Banking apps shows it is rooted. What does exactly rooted phone means? Isn't it secured?
It gives you much more control over the software. Normal Android won't let you, or will strongly advise you not to install apps from outside the Google Play store. Rooting lets you install anything from anywhere, and often that's the point but it also means the app you install from elsewhere could be malicious and Google won't be able to warn you.
Because of that most banking apps won't install on a rooted phone for security reasons. I'm not sure if any will install.
What might be worth doing is looking for a factory ROM and reinstalling non rooted software. It should be a possibility for most phones. If you wipe everything and start again you should be good to go.