λ
Sequence Observatory

55,885

5 × 11177
Deficient Odd Composite

Starting at 55,885, the Collatz iteration reaches 1 after 109 steps. The first transition is 167656; the starting value is odd with 4 positive divisors.

Prime Factor Structure

Factorization String 5 × 11177
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 4
Divisor Sum (σ) 67,068
Proper Divisor Sum 11,183
Digit Sum / Digital Root 31 (Root: 4)
Adjacent Primes #55871 ← → #55889

Radix Representation

Decimal 55885
Binary 1101101001001101 (16 bits)
Octal 0o155115
Hexadecimal 0xDA4D

Divisor Catalog (4)

1 5 11,177 55,885

Collatz Trajectory (109 steps to reach 1)

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

55,885 167,656 83,828 41,914 20,957 62,872 31,436 15,718 7,859 23,578 11,789 35,368 17,684 8,842 4,421 13,264 6,632 3,316 1,658 829 2,488 1,244 622 311 934 467 1,402 701 2,104 1,052 526 263 790 395 1,186 593 1,780 890 445 1,336 668 334 167 502 251 754 377 1,132 566 283 850 425 1,276 638 319 958 479 1,438 719 2,158

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