λ
Sequence Observatory

553,801

47 × 11783
Deficient Odd Composite

Starting at 553,801, the Collatz iteration reaches 1 after 177 steps. The first transition is 1661404; the starting value is odd with 4 positive divisors.

Prime Factor Structure

Factorization String 47 × 11783
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 4
Divisor Sum (σ) 565,632
Proper Divisor Sum 11,831
Digit Sum / Digital Root 22 (Root: 4)
Adjacent Primes #553789 ← → #553811

Radix Representation

Decimal 553801
Binary 10000111001101001001 (20 bits)
Octal 0o2071511
Hexadecimal 0x87349

Divisor Catalog (4)

1 47 11,783 553,801

Collatz Trajectory (177 steps to reach 1)

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

553,801 1,661,404 830,702 415,351 1,246,054 623,027 1,869,082 934,541 2,803,624 1,401,812 700,906 350,453 1,051,360 525,680 262,840 131,420 65,710 32,855 98,566 49,283 147,850 73,925 221,776 110,888 55,444 27,722 13,861 41,584 20,792 10,396 5,198 2,599 7,798 3,899 11,698 5,849 17,548 8,774 4,387 13,162 6,581 19,744 9,872 4,936 2,468 1,234 617 1,852 926 463 1,390 695 2,086 1,043 3,130 1,565 4,696 2,348 1,174 587

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