857,565

3² × 5 × 17 × 19 × 59

Prime Factor Structure

Factorization String 3^2 × 5 × 17 × 19 × 59

Distinct Prime Factors 5

Square Status No

Abundance Measure Deficient

Total Divisors 48

Divisor Sum (σ) 1,684,800

Proper Divisor Sum 827,235

Digit Sum / Digital Root 36 (Root: 9)

Adjacent Primes #857551 ← → #857567

1 3 5 9 15 17 19 45 51 57 59 85 95 153 171 177 255 285 295 323 531 765 855 885 969 1,003 1,121 1,615 2,655 2,907 3,009 3,363 4,845 5,015 5,605 9,027 10,089 14,535 15,045 16,815 19,057 45,135 50,445 57,171 95,285 171,513 285,855 857,565

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

857,565 2,572,696 1,286,348 643,174 321,587 964,762 482,381 1,447,144 723,572 361,786 180,893 542,680 271,340 135,670 67,835 203,506 101,753 305,260 152,630 76,315 228,946 114,473 343,420 171,710 85,855 257,566 128,783 386,350 193,175 579,526 289,763 869,290 434,645 1,303,936 651,968 325,984 162,992 81,496 40,748 20,374 10,187 30,562 15,281 45,844 22,922 11,461 34,384 17,192 8,596 4,298 2,149 6,448 3,224 1,612 806 403 1,210 605 1,816 908

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