5473
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 19
- Digital Root
- 1
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 5908
- Proper Divisor Sum (Aliquot Sum)
- 435
- 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
- 5040
- Möbius Function
- 1
- Radical
- 5473
- 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
- 160
- 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
- Denominators of continued fraction convergents to sqrt(5).at n=7A001076
- Sum of logarithmic numbers.at n=6A002751
- a(n) = floor(Fibonacci(n)/2).at n=21A004695
- a(n) = floor(n*phi^12), where phi is the golden ratio, A001622.at n=17A004927
- a(n) = Sum_{k=0..floor(n/4)} binomial(n-2k,2k).at n=20A005252
- Number of sensed 2-connected maps with n edges and without faces of degree 2.at n=9A006404
- a(n) = Fibonacci(6*n + 3)/2.at n=3A007805
- Coordination sequence T4 for Zeolite Code EUO.at n=46A008099
- Expansion of exp(sin(x))/cosh(x).at n=9A009208
- Expansion of e.g.f. sin(sinh(x))/cos(x), odd powers only.at n=4A009494
- Pseudoprimes to base 20.at n=24A020148
- Pseudoprimes to base 21.at n=17A020149
- Pseudoprimes to base 29.at n=34A020157
- Numbers k such that the continued fraction for sqrt(k) has period 27.at n=19A020366
- a(n) = 7th Fibonacci polynomial evaluated at 2^n.at n=2A020533
- a(n) = C(n-1,1) + C(n-3,3) + ... + C(n-2*m-1,2*m+1), where m = floor((n-2)/4).at n=18A024490
- Numbers that are the sum of 4 distinct positive cubes in exactly 3 ways.at n=28A025410
- Numbers that are the sum of 4 distinct positive cubes in 3 or more ways.at n=30A025413
- Rectangular array of numbers Fibonacci(m(n+1))/Fibonacci(m), m >= 1, n >= 0, read by downward antidiagonals.at n=42A028412
- An "extremely strange sequence": a(n+1) = [ A*a(n)+B ]/p^r, where p^r is the highest power of p dividing [ A*a(n)+B ] and p=2, A=4.001, B=1.2.at n=14A028948