Money wheel odds. +EV game? : gambling

My friend was in Macau recently and scoping out a game in a casino. There is a large money wheel (looks exactly like this:×573.jpg)

The one he was looking at was almost the exact same, but had numbers of 1, 3, 5, 10, 20, and 45. The payouts function by simply multiplying your betting unit by the number bet on and adding one. For example, if you bet $1 on 1 and win, you will win $2. If you bet $1 on 45 and it lands on 45, you win $46.

Doing the math out, you’ll find that the odds for every number are pretty pathetic. You are expected to lose massively if you bet on just about any number. However, if you look at the picture, two of the 54 numbers are valued 45. This means the EV of betting $1 on 45 is about $1.70. This means that you are making an insane amount of EV by betting on 45 if it’s a fair wheel. Are casinos allowed to alter the odds of the wheel and make it so that it lands on 45 less often, ensuring that it’s not a +EV game? If they can’t do this, how can they even offer the game? Surely they would get sent to the cleaners in just a matter of weeks, right?