1,515,721

1515721

1,515,721 factors as 1515721. Its 2 positive divisors give a proper-divisor sum of 1, so this integer is deficient. The Collatz stopping time is 181 steps.

Prime Factor Structure

Factorization String 1515721

Distinct Prime Factors 1

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 2

Divisor Sum (σ) 1,515,722

Proper Divisor Sum 1

Digit Sum / Digital Root 22 (Root: 4)

Adjacent Primes #1515719 ← → #1515727

Radix Representation

Decimal	1515721
Binary	101110010000011001001 (21 bits)
Octal	0o5620311
Hexadecimal	0x1720C9

Divisor Catalog (2)

1 1,515,721

Collatz Trajectory (181 steps to reach 1)

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

1,515,721 4,547,164 2,273,582 1,136,791 3,410,374 1,705,187 5,115,562 2,557,781 7,673,344 3,836,672 1,918,336 959,168 479,584 239,792 119,896 59,948 29,974 14,987 44,962 22,481 67,444 33,722 16,861 50,584 25,292 12,646 6,323 18,970 9,485 28,456 14,228 7,114 3,557 10,672 5,336 2,668 1,334 667 2,002 1,001 3,004 1,502 751 2,254 1,127 3,382 1,691 5,074 2,537 7,612 3,806 1,903 5,710 2,855 8,566 4,283 12,850 6,425 19,276 9,638

More profiles

Browse other published profiles and their separate link collections.

Profile #8,342,168 Profile #1,146,956 Profile #9,712,347 Profile #6,573,969 Profile #965,653 Profile #4,620,983 Profile #853,259 Profile #1,288,150

← Previous Integer #1,515,720 Browse Full Index Next Integer #1,515,722 →