λ
Sequence Observatory

549,405

32 × 5 × 29 × 421
Deficient Odd Composite

Starting at 549,405, the Collatz iteration reaches 1 after 115 steps. The first transition is 1648216; the starting value is odd with 24 positive divisors.

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Prime Factor Structure

Factorization String 3^2 × 5 × 29 × 421
Distinct Prime Factors 4
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 24
Divisor Sum (σ) 987,480
Proper Divisor Sum 438,075
Digit Sum / Digital Root 27 (Root: 9)
Adjacent Primes #549403 ← → #549421

Radix Representation

Decimal 549405
Binary 10000110001000011101 (20 bits)
Octal 0o2061035
Hexadecimal 0x8621D

Divisor Catalog (5 of 24)

1 3 5 9 15

Collatz Trajectory (115 steps to reach 1)

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

Showing the first 5 trajectory entries; the stopping-time total above is unchanged.

549,405 1,648,216 824,108 412,054 206,027

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