16,550
The 16550 UART is the chip behind every PC serial port.
- Even
- Composite
Where 16,550 fits
Why 16,550 is special
Its predecessor lost characters at high speed because it held only one byte at a time. Adding a 16-byte buffer fixed it, and the interface is emulated in software to this day for compatibility.
Factors & digit properties
- Divisors (12)
- 1, 2, 5, 10, 25, 50, 331, 662, 1655, 3310, 8275, 16550
- Prime factorisation
- 2 × 5^2 × 331
- Digit sum
- 17
- Digital root
- 8
Representations
- Decimal
- 16550
- Binary
- 100000010100110
- Octal
- 40246
- Hexadecimal
- 40a6
- Scientific notation
- 1.655 × 10^4
Other mathematical patterns
- Deficient number
Related numbers & connections
The 8250 held one character and lost data at speed; the 16550 added a 16-byte buffer and fixed it. Modern systems still emulate the 16550's registers.
View 8250 →Other connections
- developed from8250
why?
Strength 0.50, confidence "high".
Technology & computing
The 16550 added a 16-byte FIFO to a chip that previously dropped characters under load. Modern systems have no such hardware and still present the same register interface, because too much software expects it.
DocumentedTechnology & computing
Common questions
Is 16,550 a prime number?
No, 16,550 is not prime.
What are the factors of 16,550?
The factors of 16,550 are 1, 2, 5, 10, 25, 50, 331, 662, 1655, 3310, 8275, 16550.
About this page's data
Mathematical facts:computed directly from the number's value — nothing to source or verify externally.
Contextual records: 1 reviewer-confirmed record, sourced and reviewed before publication.
Last reviewed: 3 August 2026