λ
Sigma Notebook

2,155,173

3 × 718391
Deficient Odd Composite

2,155,173 is odd and not a perfect square. Its factorization is 3 × 718391 and its 4 divisors sum to 2,873,568.

Prime Factor Structure

Factorization String 3 × 718391
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 4
Divisor Sum (σ) 2,873,568
Proper Divisor Sum 718,395
Digit Sum / Digital Root 24 (Root: 6)
Adjacent Primes #2155171 ← → #2155177

Radix Representation

Decimal 2155173
Binary 1000001110001010100101 (22 bits)
Octal 0o10161245
Hexadecimal 0x20E2A5

Divisor Catalog (4)

1 3 718,391 2,155,173

Collatz Trajectory (117 steps to reach 1)

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

2,155,173 6,465,520 3,232,760 1,616,380 808,190 404,095 1,212,286 606,143 1,818,430 909,215 2,727,646 1,363,823 4,091,470 2,045,735 6,137,206 3,068,603 9,205,810 4,602,905 13,808,716 6,904,358 3,452,179 10,356,538 5,178,269 15,534,808 7,767,404 3,883,702 1,941,851 5,825,554 2,912,777 8,738,332 4,369,166 2,184,583 6,553,750 3,276,875 9,830,626 4,915,313 14,745,940 7,372,970 3,686,485 11,059,456 5,529,728 2,764,864 1,382,432 691,216 345,608 172,804 86,402 43,201 129,604 64,802 32,401 97,204 48,602 24,301 72,904 36,452 18,226 9,113 27,340 13,670

More profiles

← Previous Integer #2,155,172 Browse Full Index Next Integer #2,155,174 →