5134
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 13
- Digital Root
- 4
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 8208
- Proper Divisor Sum (Aliquot Sum)
- 3074
- 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
- 2400
- Möbius Function
- -1
- Radical
- 5134
- Omega Function (Ω)
- 3
- Little Omega Function (ω)
- 3
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
- 147
- 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
- Number of bicentered hydrocarbons with n atoms.at n=16A000200
- Numbers m such that 3*2^m - 1 is prime.at n=29A002235
- Number of maximal collections of pairwise disjoint subsets {X,Y,Z} of {1, 2, ..., n}, each satisfying X + Y = Z.at n=19A002849
- a(n) = 1 + Sum_{i=1..n} (n-i+1)*phi(i).at n=36A005598
- Numbers k for which 10k+1, 10k+3, 10k+7 and 10k+9 are primes.at n=24A007811
- Coordination sequence T2 for Zeolite Code MEL.at n=46A008151
- Coordination sequence T1 for Keatite.at n=40A009844
- Fibonacci sequence beginning 1, 13.at n=14A022103
- Expansion of Product_{m>=1} (1+x^m)^17.at n=4A022582
- a(n) = least m such that if r and s in {1/1, 1/3, 1/5, ..., 1/(2n-1)} satisfy r < s, then r < k/m < (k+2)/m < s for some integer k.at n=31A024841
- a(n) = (d(n) - r(n))/5, where d = A026037 and r is the periodic sequence with fundamental period (1,2,0,2,0).at n=40A026039
- Number of asymmetric orthoplex n-ominoes in n-2 space.at n=9A036369
- Sum of factorials of digits of n equals the largest prime factor of n.at n=10A074257
- Sum of the quadratic residues of prime(n).at n=35A076409
- Least nontrivial multiple of the n-th prime beginning with 5.at n=35A078289
- a(n) = 6*n^2 + 3*n + 1.at n=29A085473
- Records in A105822.at n=45A104664
- Numbers k such that A136677(k) is prime.at n=7A136686
- Numbers k such that k^2 == 2 (mod 23^2).at n=19A156849
- Numbers k such that the sum of the decimal digits of k is a substring of k and of k^3.at n=46A162016