The number 161

Representation numerals

Greek numeral

ρξαʹ

Arabic numeral

١٦١

Roman numeral

CLXI

Maya numeral

●●●
▃▃▃▃▃

Chinese numeral

一百六十一

Hebrew numeral

קסא
Numeral systems
Binary: 10100001
Septimal (base 7): 320
Octal: 241
Hexadecimal: a1
Base 24: 6H
Factorization
161 = 7 × 23
161 has 4 divisors: 1, 7, 23, 161
Sum of all divisors other than 161: 31
Sums & differences
Difference of 2 squares: 161 = 152 - 82 = 812 - 802
Characteristics
161 is a palindromic number in decimal system
Related primes
The 161th prime number is: 947
Previous prime number: 157 — Next prime number: 163
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