11045
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 11
- Digital Root
- 2
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 6
- Divisor Sum
- 13542
- Proper Divisor Sum (Aliquot Sum)
- 2497
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 8648
- Möbius Function
- 0
- Radical
- 235
- Omega Function (Ω)
- 3
- 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
- 130
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- Squarefree Number
- no
- 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
- Number of trees on n nodes with forbidden limbs.at n=16A014265
- Number of trees on n nodes with forbidden limbs.at n=16A014266
- Numbers in which 0,1,2,3,4,5 all occur in base 6.at n=30A031947
- a(n) = 5*n^2.at n=47A033429
- Digitally balanced numbers in base 6: equal numbers of 0's, 1's, ..., 5's.at n=30A049357
- Indices of primes in sequence defined by A(0) = 59, A(n) = 10*A(n-1) - 21 for n > 0.at n=21A101583
- INVERT transform (with offset) of quintuple factorials (A008546), where g.f. satisfies: A(x) = 1 + x*[d/dx x*A(x)^5]/A(x)^5.at n=5A112940
- Retrograde trajectory of 13 under map n -> A132948(n).at n=31A132947
- Lower triangular array, called S1hat(-5), related to partition number array A145372.at n=49A145373
- Lower triangular array, called S1hat(-5), related to partition number array A145372.at n=60A145373
- Number of nX3 1..4 arrays containing at least one of each value, all equal values connected, rows considered as a single number in nondecreasing order, and columns considered as a single number in decreasing order.at n=4A166843
- A175366(n^2).at n=44A175367
- Numbers n with property that there is a different number m such that the lunar squares n*n and m*m are the same.at n=31A181319
- Integers n such that both 2*n^2 + 3*(n+2)^2 and 3*n^2 + 2*(n+2)^2 are prime.at n=41A216849
- Primitive antiharmonic numbers.at n=45A228023
- Number of (n+2)X(1+2) arrays of permutations of 0..n*3+5 filled by rows with each element moved 0 or 1 knight moves, and rows and columns in increasing lexicographic order.at n=5A263952
- T(n,k)=Number of (n+2)X(k+2) arrays of permutations of 0..(n+2)*(k+2)-1 filled by rows with each element moved 0 or 1 knight moves, and rows and columns in increasing lexicographic order.at n=20A263955
- Coordination sequence for (2,3,8) tiling of hyperbolic plane.at n=37A265058
- Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 557", based on the 5-celled von Neumann neighborhood.at n=21A272926
- Products of two distinct tribonacci numbers > 1.at n=39A274433