λ
Sigma Notebook

7,557,291

32 × 7 × 139 × 863
Deficient Odd Composite

7,557,291 is odd and not a perfect square. Its factorization is 3^2 × 7 × 139 × 863 and its 24 divisors sum to 12,579,840.

Prime Factor Structure

Factorization String 3^2 × 7 × 139 × 863
Distinct Prime Factors 4
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 24
Divisor Sum (σ) 12,579,840
Proper Divisor Sum 5,022,549
Digit Sum / Digital Root 36 (Root: 9)
Adjacent Primes #7557289 ← → #7557343

Radix Representation

Decimal 7557291
Binary 11100110101000010101011 (23 bits)
Octal 0o34650253
Hexadecimal 0x7350AB

Divisor Catalog (24)

1 3 7 9 21 63 139 417 863 973 1,251 2,589 2,919 6,041 7,767 8,757 18,123 54,369 119,957 359,871 839,699 1,079,613 2,519,097 7,557,291

Collatz Trajectory (111 steps to reach 1)

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

7,557,291 22,671,874 11,335,937 34,007,812 17,003,906 8,501,953 25,505,860 12,752,930 6,376,465 19,129,396 9,564,698 4,782,349 14,347,048 7,173,524 3,586,762 1,793,381 5,380,144 2,690,072 1,345,036 672,518 336,259 1,008,778 504,389 1,513,168 756,584 378,292 189,146 94,573 283,720 141,860 70,930 35,465 106,396 53,198 26,599 79,798 39,899 119,698 59,849 179,548 89,774 44,887 134,662 67,331 201,994 100,997 302,992 151,496 75,748 37,874 18,937 56,812 28,406 14,203 42,610 21,305 63,916 31,958 15,979 47,938

More profiles

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