λ
Match Zalai

1,501,621

11 × 136511
Deficient Odd Composite

1,501,621 factors as 11 × 136511. Its 4 positive divisors give a proper-divisor sum of 136,523, so this integer is deficient. The Collatz stopping time is 256 steps.

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Prime Factor Structure

Factorization String 11 × 136511
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 4
Divisor Sum (σ) 1,638,144
Proper Divisor Sum 136,523
Digit Sum / Digital Root 16 (Root: 7)
Adjacent Primes #1501613 ← → #1501639

Radix Representation

Decimal 1501621
Binary 101101110100110110101 (21 bits)
Octal 0o5564665
Hexadecimal 0x16E9B5

Divisor Catalog (4)

1 11 136,511 1,501,621

Collatz Trajectory (256 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.

1,501,621 4,504,864 2,252,432 1,126,216 563,108

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