3 × 7² × 53 × 67

Prime Factor Structure

Factorization String 3 × 7^2 × 53 × 67

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 837,216

Proper Divisor Sum 315,219

Digit Sum / Digital Root 33 (Root: 6)

Adjacent Primes #521993 ← → #521999

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

521,997 1,565,992 782,996 391,498 195,749 587,248 293,624 146,812 73,406 36,703 110,110 55,055 165,166 82,583 247,750 123,875 371,626 185,813 557,440 278,720 139,360 69,680 34,840 17,420 8,710 4,355 13,066 6,533 19,600 9,800 4,900 2,450 1,225 3,676 1,838 919 2,758 1,379 4,138 2,069 6,208 3,104 1,552 776 388 194 97 292 146 73 220 110 55 166 83 250 125 376 188 94

Other feeder batches with open delivery windows. Each feeder keeps its own target batch.