Nope. Nobody that is legit will have a numerical number in their domain name, it's just not something that legit people do. The only reason why they have that is that they probably ran out of phishing domains to register so they were forced to do that.
About that, I wouldn't go as far as diminishing every single website with numbers in their URL.
There are sites with a number in the name which are totally secure, known and reputable - G2A for example.
Other than that you are right when we are dealing with the variation of the established name but with a numerical twist in it - it's most likely a scam attempt.