5,621,650

2 × 5² × 29 × 3877

Starting at 5,621,650, the Collatz iteration reaches 1 after 157 steps. The first transition is 2810825; the starting value is even with 24 positive divisors.

Prime Factor Structure

Factorization String 2 × 5^2 × 29 × 3877

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 10,819,620

Proper Divisor Sum 5,197,970

Digit Sum / Digital Root 25 (Root: 7)

Adjacent Primes #5621617 ← → #5621653

Radix Representation

Decimal	5621650
Binary	10101011100011110010010 (23 bits)
Octal	0o25343622
Hexadecimal	0x55C792

Divisor Catalog (24)

1 2 5 10 25 29 50 58 145 290 725 1,450 3,877 7,754 19,385 38,770 96,925 112,433 193,850 224,866 562,165 1,124,330 2,810,825 5,621,650

Collatz Trajectory (157 steps to reach 1)

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

5,621,650 2,810,825 8,432,476 4,216,238 2,108,119 6,324,358 3,162,179 9,486,538 4,743,269 14,229,808 7,114,904 3,557,452 1,778,726 889,363 2,668,090 1,334,045 4,002,136 2,001,068 1,000,534 500,267 1,500,802 750,401 2,251,204 1,125,602 562,801 1,688,404 844,202 422,101 1,266,304 633,152 316,576 158,288 79,144 39,572 19,786 9,893 29,680 14,840 7,420 3,710 1,855 5,566 2,783 8,350 4,175 12,526 6,263 18,790 9,395 28,186 14,093 42,280 21,140 10,570 5,285 15,856 7,928 3,964 1,982 991

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