521 ‖ number five hundred & twenty one

integer, natural,
positive, counting number, odd

0. bin code

   001101010011001000110001

1. url code

   %35%32%31

2. html codes

   • 521
   • 521

3. css codes

   • \0035\0032\0031
   • \35\32\31

4. js codes

   • \u0035\u0032\u0031
   • \u{35}\u{32}\u{31}
   • \x35\x32\x31

relates

• n.31
• n.32
• n.35
• n.49
• n.50
• n.53