In the 7-bit ASCII character set, ASCII code 57 is represented by the character 9 also known as the nine.

Character Representation Value/Description
ASCII Character 9
Decimal 57
Octal 71
Hexadecimal 39
Binary 0011 1001
Description Nine
Category Printable Characters
Subcategory Digits
Unicode U+0039

Encoding

Encoding non-standard letters and characters into values that can be displayed e.g. in browsers

Encoding Method Encoded Value
URL Escape Code 9
Quoted-printable =39