Recognised as Decimal number

165.5

Positive
Decimal
1 d.p.
Exact fraction
4 s.f.

165.5 is a decimal number equal to 331⁄2. It lies between 165 and 166, and as a percentage it is 16,550%.

Number properties

Absolute value165.5

SignPositive

Integer part165

Fractional part0.5

Decimal places1

Floor165

Ceiling166

Rounded to nearest166

Truncated165

Fractions & ratios

As a fraction331/2exact

Ratio331 : 2

As a percentage16,550%

Reciprocal0.0060422961≈

Arithmetic

Double331

Half82.75

Square27,390.25

Cube4,533,086.375

Square root12.8646803303≈

Cube root5.4903411743≈

Negation-165.5

Natural logarithm5.1089711948≈

Logarithm base 102.2187979981≈

Representations

Decimal165.5

Scientific notation1.655 × 10^2

Exponential1.655e+2

IEEE 754 binary64 (hex)0x4064B00000000000the exact 64-bit pattern stored

IEEE 754 binary32 (hex)0x4325800032-bit single precision, may lose accuracy

Stored as165.5the nearest binary64 value to what you typed

Rounding & precision

Significant figures as written4counted from the digits as typed, not from the value

To 0 decimal places166

To 1 decimal place165.5

To 2 decimal places165.50

To 3 decimal places165.500

To 4 decimal places165.5000

To 1 significant figure2e+2

To 2 significant figures1.7e+2

To 3 significant figures166

To 4 significant figures165.5

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.