10081
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 10
- Digital Root
- 1
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 10692
- Proper Divisor Sum (Aliquot Sum)
- 611
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 9472
- Möbius Function
- 1
- Radical
- 10081
- Omega Function (Ω)
- 2
- Little Omega Function (ω)
- 2
Special
- Factorial
- no
- Catalan Number
- no
- Bell Number
- no
- Motzkin Number
- no
- Primorial
- no
Figurate Numbers
- Fibonacci Number
- no
- Triangular Number
- no
- Perfect Square
- no
- Perfect Cube
- no
- Pentagonal Number
- no
- Hexagonal Number
- no
- Lucas Number
- no
- Tetrahedral Number
- no
- Pell Number
- no
- Tribonacci Number
- no
- Pronic Number
- no
Recreational
- Happy Number
- no
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 86
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- yes
- Squarefree Number
- yes
- Prime Power
- no
- Prime Factorization
- no
- Twin Prime
- no
- Mersenne Prime
- no
- Sophie Germain Prime
- no
- Safe Prime
- no
- Powerful Number
- no
- Achilles Number
- no
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- no
- Odd
- yes
Appears in sequences
- Numbers that are the sum of 2 positive 4th powers.at n=45A003336
- Denominators of worst case for Engel expansion.at n=37A006540
- Pseudoprimes to base 59.at n=39A020187
- Pseudoprimes to base 77.at n=35A020205
- Strong pseudoprimes to base 59.at n=15A020285
- Strong pseudoprimes to base 82.at n=21A020308
- Numbers k such that the continued fraction for sqrt(k) has period 35.at n=20A020374
- a(n) = 12*a(n-1) - a(n-2).at n=4A023038
- Numerators of continued fraction convergents to sqrt(35).at n=7A041058
- Numerators of continued fraction convergents to sqrt(140).at n=7A041256
- Numerators of continued fraction convergents to sqrt(315).at n=7A041594
- Numerators of continued fraction convergents to sqrt(560).at n=7A042072
- Numerators of continued fraction convergents to sqrt(922).at n=7A042782
- a(n) = 2*n! + 1.at n=7A052898
- Centered 16-gonal numbers.at n=35A069129
- Reverse of smallest prime factor of k = largest prime factor of k+1; a(1)=1.at n=11A071392
- a(n)*a(n+3) - a(n+1)*a(n+2) = 5, given a(0)=a(1)=1, a(2)=6.at n=8A080875
- Third row of Pascal-(1,7,1) array A081582.at n=18A081593
- Divide n-th row of A084024 by n.at n=14A084025
- Numbers that can be represented as j^4 + k^4, with 0 < j < k, in exactly one way.at n=37A088687