Representation numerals

πζʹ

٨٧

LXXXVII

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八十七

פז

Numeral systems

Binary: 1010111

Septimal (base 7): 153

Octal: 127

Hexadecimal: 57

Base 24: 3F

Sums & differences

87 is the sum of the first 4 squared prime numbers: 87 = 2^{2} + 3^{2} + 5^{2} + 7^{2}

Difference of 2 squares: 87 = 16^{2} - 13^{2} = 44^{2} - 43^{2}

Characteristics