1,561,227

3 × 520409

1,561,227 factors as 3 × 520409. Its 4 positive divisors give a proper-divisor sum of 520,413, so this integer is deficient. The Collatz stopping time is 75 steps.

Prime Factor Structure

Factorization String 3 × 520409

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 2,081,640

Proper Divisor Sum 520,413

Digit Sum / Digital Root 24 (Root: 6)

Adjacent Primes #1561213 ← → #1561243

Radix Representation

Decimal	1561227
Binary	101111101001010001011 (21 bits)
Octal	0o5751213
Hexadecimal	0x17D28B

Divisor Catalog (4)

1 3 520,409 1,561,227

Collatz Trajectory (75 steps to reach 1)

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

1,561,227 4,683,682 2,341,841 7,025,524 3,512,762 1,756,381 5,269,144 2,634,572 1,317,286 658,643 1,975,930 987,965 2,963,896 1,481,948 740,974 370,487 1,111,462 555,731 1,667,194 833,597 2,500,792 1,250,396 625,198 312,599 937,798 468,899 1,406,698 703,349 2,110,048 1,055,024 527,512 263,756 131,878 65,939 197,818 98,909 296,728 148,364 74,182 37,091 111,274 55,637 166,912 83,456 41,728 20,864 10,432 5,216 2,608 1,304 652 326 163 490 245 736 368 184 92 46

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