1,576,551

3 × 525517

Starting at 1,576,551, the Collatz iteration reaches 1 after 88 steps. The first transition is 4729654; the starting value is odd with 4 positive divisors.

Prime Factor Structure

Factorization String 3 × 525517

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 2,102,072

Proper Divisor Sum 525,521

Digit Sum / Digital Root 30 (Root: 3)

Adjacent Primes #1576543 ← → #1576559

Radix Representation

Decimal	1576551
Binary	110000000111001100111 (21 bits)
Octal	0o6007147
Hexadecimal	0x180E67

Divisor Catalog (4)

1 3 525,517 1,576,551

Collatz Trajectory (88 steps to reach 1)

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

1,576,551 4,729,654 2,364,827 7,094,482 3,547,241 10,641,724 5,320,862 2,660,431 7,981,294 3,990,647 11,971,942 5,985,971 17,957,914 8,978,957 26,936,872 13,468,436 6,734,218 3,367,109 10,101,328 5,050,664 2,525,332 1,262,666 631,333 1,894,000 947,000 473,500 236,750 118,375 355,126 177,563 532,690 266,345 799,036 399,518 199,759 599,278 299,639 898,918 449,459 1,348,378 674,189 2,022,568 1,011,284 505,642 252,821 758,464 379,232 189,616 94,808 47,404 23,702 11,851 35,554 17,777 53,332 26,666 13,333 40,000 20,000 10,000

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