5474
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
- 2
Divisibility
- Divisor Count
- 16
- Divisor Sum
- 10368
- Proper Divisor Sum (Aliquot Sum)
- 4894
- 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
- 2112
- Möbius Function
- 1
- Radical
- 5474
- Omega Function (Ω)
- 4
- Little Omega Function (ω)
- 4
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
- 41
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- 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
- yes
- Odd
- no
Appears in sequences
- a(n) = round(n*phi^12), where phi is the golden ratio, A001622.at n=17A004947
- a(n) = ceiling(n*phi^12), where phi is the golden ratio, A001622.at n=17A004967
- Stella octangula numbers: a(n) = n*(2*n^2 - 1).at n=14A007588
- a(n+1) = Sum_{k=0..floor(n/4)} a(k) * a(n-k).at n=18A030034
- Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 72.at n=22A031570
- Numbers whose base-4 representation contains exactly four 1's and two 2's.at n=35A045107
- Numbers whose base-5 representation contains exactly three 3's and two 4's.at n=10A045306
- Composite n coprime to 5 such that Fibonacci(n) == Legendre(n,5) (mod n).at n=1A049062
- Numbers k such that 113*2^k-1 is prime.at n=14A050582
- Numbers n such that 125*2^n-1 is prime.at n=9A050588
- (Terms in A029661)/2.at n=42A051430
- (Terms in A029647)/2.at n=42A051471
- Engel expansion of zeta(3) = 1.20206... .at n=5A053980
- Number of right triangles of a given area required to form successively larger squares.at n=36A060626
- a(n) = Sum_{k=1..n} d(k)*prime(k), where d(k) = A001223.at n=26A064009
- Squarefree numbers having exactly three prime gaps.at n=22A073489
- Numbers having exactly three prime gaps in their factorization.at n=26A073495
- Number of unlabeled, connected graphs on n vertices whose complements are bipartite.at n=10A079571
- n+A001045(n+1).at n=13A081660
- a(n)=A089551(n)/2.at n=34A089558