3² × 157²

Prime Factor Structure

Factorization String 3^2 × 157^2

Distinct Prime Factors 2

Square Status Yes (√221841 = 471)

Abundance Measure Deficient

Analytical Properties

Total Divisors 9

Divisor Sum (σ) 322,491

Proper Divisor Sum 100,650

Digit Sum / Digital Root 18 (Root: 9)

Adjacent Primes #221831 ← → #221849

1 3 9 157 471 1,413 24,649 73,947 221,841

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

221,841 665,524 332,762 166,381 499,144 249,572 124,786 62,393 187,180 93,590 46,795 140,386 70,193 210,580 105,290 52,645 157,936 78,968 39,484 19,742 9,871 29,614 14,807 44,422 22,211 66,634 33,317 99,952 49,976 24,988 12,494 6,247 18,742 9,371 28,114 14,057 42,172 21,086 10,543 31,630 15,815 47,446 23,723 71,170 35,585 106,756 53,378 26,689 80,068 40,034 20,017 60,052 30,026 15,013 45,040 22,520 11,260 5,630 2,815 8,446

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