3² × 5 × 17³

Prime Factor Structure

Factorization String 3^2 × 5 × 17^3

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 407,160

Proper Divisor Sum 186,075

Digit Sum / Digital Root 18 (Root: 9)

Adjacent Primes #221083 ← → #221087

1 3 5 9 15 17 45 51 85 153 255 289 765 867 1,445 2,601 4,335 4,913 13,005 14,739 24,565 44,217 73,695 221,085

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

221,085 663,256 331,628 165,814 82,907 248,722 124,361 373,084 186,542 93,271 279,814 139,907 419,722 209,861 629,584 314,792 157,396 78,698 39,349 118,048 59,024 29,512 14,756 7,378 3,689 11,068 5,534 2,767 8,302 4,151 12,454 6,227 18,682 9,341 28,024 14,012 7,006 3,503 10,510 5,255 15,766 7,883 23,650 11,825 35,476 17,738 8,869 26,608 13,304 6,652 3,326 1,663 4,990 2,495 7,486 3,743 11,230 5,615 16,846 8,423

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