3² × 5² × 7

Prime Factor Structure

Factorization String 3^2 × 5^2 × 7

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 18

Divisor Sum (σ) 3,224

Proper Divisor Sum 1,649

Digit Sum / Digital Root 18 (Root: 9)

Adjacent Primes #1571 ← → #1579

1 3 5 7 9 15 21 25 35 45 63 75 105 175 225 315 525 1,575

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

1,575 4,726 2,363 7,090 3,545 10,636 5,318 2,659 7,978 3,989 11,968 5,984 2,992 1,496 748 374 187 562 281 844 422 211 634 317 952 476 238 119 358 179 538 269 808 404 202 101 304 152 76 38 19 58 29 88 44 22 11 34 17 52 26 13 40 20 10 5 16 8 4 2

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