5771
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 20
- Digital Root
- 2
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 6000
- Proper Divisor Sum (Aliquot Sum)
- 229
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 5544
- Möbius Function
- 1
- Radical
- 5771
- 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
- 142
- 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
- a(n) = floor(n*phi^11), where phi is the golden ratio, A001622.at n=29A004926
- a(n) = round(n*phi^11), where phi is the golden ratio, A001622.at n=29A004946
- Coordination sequence T2 for Coesite.at n=40A008268
- Pisot sequence T(14,23), a(n)=[ a(n-1)^2/a(n-2) ].at n=13A010922
- Base 8 digits are, in order, the first n terms of the periodic sequence with initial period 1,3,2.at n=4A037615
- Numbers k such that 231*2^k-1 is prime.at n=41A050867
- Dimension of the space of weight n cuspidal newforms for Gamma_1( 59 ).at n=40A063332
- a(1)=1, a(2)=2, a(n+2)=(a(n+1)+a(n))/2 if a(n+1)+a(n) is even, a(n+2)=(3*(a(n+1)+a(n))+1)/2 otherwise.at n=21A069162
- Bisection (even part) of Chebyshev sequence with Diophantine property.at n=3A077409
- Combined Diophantine Chebyshev sequences A077409 and A077250.at n=6A077411
- Consider the family of directed multigraphs enriched by the species of arborescences. Sequence gives number of those multigraphs with n labeled loops and arcs.at n=4A099714
- a(1) = 412; for n > 1, a(n) = a(n-1) + 1 + sum of distinct prime factors of a(n-1) that are < a(n-1).at n=39A105211
- Numbers k such that k^2 = 24*j^2 + 25.at n=10A106330
- Semiprimes a such that there exist three semiprimes b, c and d with a^3=b^3+c^3+d^3.at n=38A113490
- n(k) is the minimum n that requires at least k to make 2*Prime[n]+Prime[k] a prime.at n=37A114234
- Numbers such that the sum of the factorials of the digits of the cube is a square.at n=24A126076
- Triangle read by rows: A007318^(-1) * A011971.at n=48A136789
- Positive numbers y such that y^2 is of the form x^2+(x+199)^2 with integer x.at n=7A159548
- The 4k+3 integers corresponding to the record positions in A165601.at n=27A166046
- Positive integers of the form (30*m^2+1)/11.at n=8A179339