2² × 5² × 5519

Prime Factor Structure

Factorization String 2^2 × 5^2 × 5519

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 18

Divisor Sum (σ) 1,197,840

Proper Divisor Sum 645,940

Digit Sum / Digital Root 20 (Root: 2)

Adjacent Primes #551861 ← → #551909

1 2 4 5 10 20 25 50 100 5,519 11,038 22,076 27,595 55,190 110,380 137,975 275,950 551,900

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

551,900 275,950 137,975 413,926 206,963 620,890 310,445 931,336 465,668 232,834 116,417 349,252 174,626 87,313 261,940 130,970 65,485 196,456 98,228 49,114 24,557 73,672 36,836 18,418 9,209 27,628 13,814 6,907 20,722 10,361 31,084 15,542 7,771 23,314 11,657 34,972 17,486 8,743 26,230 13,115 39,346 19,673 59,020 29,510 14,755 44,266 22,133 66,400 33,200 16,600 8,300 4,150 2,075 6,226 3,113 9,340 4,670 2,335 7,006 3,503

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