6,561,755

5 × 1312351

Starting at 6,561,755, the Collatz iteration reaches 1 after 90 steps. The first transition is 19685266; the starting value is odd with 4 positive divisors.

Prime Factor Structure

Factorization String 5 × 1312351

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 7,874,112

Proper Divisor Sum 1,312,357

Digit Sum / Digital Root 35 (Root: 8)

Adjacent Primes #6561721 ← → #6561761

Radix Representation

Decimal	6561755
Binary	11001000001111111011011 (23 bits)
Octal	0o31017733
Hexadecimal	0x641FDB

Divisor Catalog (4)

1 5 1,312,351 6,561,755

Collatz Trajectory (90 steps to reach 1)

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

6,561,755 19,685,266 9,842,633 29,527,900 14,763,950 7,381,975 22,145,926 11,072,963 33,218,890 16,609,445 49,828,336 24,914,168 12,457,084 6,228,542 3,114,271 9,342,814 4,671,407 14,014,222 7,007,111 21,021,334 10,510,667 31,532,002 15,766,001 47,298,004 23,649,002 11,824,501 35,473,504 17,736,752 8,868,376 4,434,188 2,217,094 1,108,547 3,325,642 1,662,821 4,988,464 2,494,232 1,247,116 623,558 311,779 935,338 467,669 1,403,008 701,504 350,752 175,376 87,688 43,844 21,922 10,961 32,884 16,442 8,221 24,664 12,332 6,166 3,083 9,250 4,625 13,876 6,938

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