È corretto? Sono americano, per cortesia.

Yep! It would be pronounced ormotsdachvidmeti.

ori- 2

otsi- 20

da – and

chvidmeti- 17

chvidmeti comes from shvidi (7) and t-X-meti adds ten. erti is 1, t-ert-meti is 11, for example. This is how you make numbers 11-19. 17 takes t + sh and collapses it to ch, hence chvidmeti – 17.

2 20 and 7 and 10 = 57.