How do you say it is 545 in Spanish?

Answer 1

To say "it is 545" in Spanish, you would say "son las cinco cuarenta y cinco." In Spanish, the hours are typically pluralized, so "son" is used instead of "es." The word "cinco" represents the hour (5), and "cuarenta y cinco" represents the minutes (45).

Answer 2

If you mean 'five hundred and forty five':

Es quinientos cuarneta y cinco

If you mean 5.45 (the time)

Son las cinco y cuarenta y cinco (it's 5.45)

OR

Son las seis menos cuarto/quince (it's a quarter/15 minutes to six)

Answer 3

Es novecientos cuarenta y cinco.

I'm guessing that you mean 9:45 rather than 945, in which case that would be either "Son las nueve cuarenta y cinco" or "Son las diez menos cuarto" (It is a quarter to ten).