521809

Prime Factor Structure

Factorization String 521809

Distinct Prime Factors 1

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 2

Divisor Sum (σ) 521,810

Proper Divisor Sum 1

Digit Sum / Digital Root 25 (Root: 7)

Adjacent Primes #521791 ← → #521813

1 521,809

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

521,809 1,565,428 782,714 391,357 1,174,072 587,036 293,518 146,759 440,278 220,139 660,418 330,209 990,628 495,314 247,657 742,972 371,486 185,743 557,230 278,615 835,846 417,923 1,253,770 626,885 1,880,656 940,328 470,164 235,082 117,541 352,624 176,312 88,156 44,078 22,039 66,118 33,059 99,178 49,589 148,768 74,384 37,192 18,596 9,298 4,649 13,948 6,974 3,487 10,462 5,231 15,694 7,847 23,542 11,771 35,314 17,657 52,972 26,486 13,243 39,730 19,865

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