λ
Integer Codex

1,591,355

5 × 318271
Deficient Odd Composite

For 1,591,355, the 4 positive divisors have a total of 1,909,632. Removing 1,591,355 leaves 318,277, which gives the deficient classification.

Prime Factor Structure

Factorization String 5 × 318271
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 4
Divisor Sum (σ) 1,909,632
Proper Divisor Sum 318,277
Digit Sum / Digital Root 29 (Root: 2)
Adjacent Primes #1591351 ← → #1591363

Radix Representation

Decimal 1591355
Binary 110000100100000111011 (21 bits)
Octal 0o6044073
Hexadecimal 0x18483B

Divisor Catalog (4)

1 5 318,271 1,591,355

Collatz Trajectory (150 steps to reach 1)

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

1,591,355 4,774,066 2,387,033 7,161,100 3,580,550 1,790,275 5,370,826 2,685,413 8,056,240 4,028,120 2,014,060 1,007,030 503,515 1,510,546 755,273 2,265,820 1,132,910 566,455 1,699,366 849,683 2,549,050 1,274,525 3,823,576 1,911,788 955,894 477,947 1,433,842 716,921 2,150,764 1,075,382 537,691 1,613,074 806,537 2,419,612 1,209,806 604,903 1,814,710 907,355 2,722,066 1,361,033 4,083,100 2,041,550 1,020,775 3,062,326 1,531,163 4,593,490 2,296,745 6,890,236 3,445,118 1,722,559 5,167,678 2,583,839 7,751,518 3,875,759 11,627,278 5,813,639 17,440,918 8,720,459 26,161,378 13,080,689

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