521
521
Deficient
Odd
Prime
Prime Factor Structure
Factorization String
521
Distinct Prime Factors
1
Square Status
No
Abundance Measure
Deficient
Analytical Properties
Total Divisors
2
Divisor Sum (σ)
522
Proper Divisor Sum
1
Digit Sum / Digital Root
8 (Root: 8)
Radix Representation
| Decimal | 521 |
| Binary | 1000001001 (10 bits) |
| Octal | 0o1011 |
| Hexadecimal | 0x209 |
Divisor Catalog (2)
Collatz Trajectory (123 steps to reach 1)
Iterative sequence n → n/2 (if even) or 3n+1 (if odd):
Active Feeder Network
Other feeder batches with open delivery windows. Each feeder keeps its own target batch.