Il numero 171, centosettantuno in Italiano, in Inglese si dice one hundred seventy-one.
Il numero ordinale 171° in inglese si dice one hundred seventy-first.
162: one hundred sixty-two
163: one hundred sixty-three
164: one hundred sixty-four
165: one hundred sixty-five
166: one hundred sixty-six
167: one hundred sixty-seven
168: one hundred sixty-eight
169: one hundred sixty-nine
170: one hundred seventy
172: one hundred seventy-two
173: one hundred seventy-three
174: one hundred seventy-four
175: one hundred seventy-five
176: one hundred seventy-six
177: one hundred seventy-seven
178: one hundred seventy-eight
179: one hundred seventy-nine
180: one hundred eighty