4425
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 15
- Digital Root
- 6
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 12
- Divisor Sum
- 7440
- Proper Divisor Sum (Aliquot Sum)
- 3015
- 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
- 2320
- Möbius Function
- 0
- Radical
- 885
- Omega Function (Ω)
- 4
- 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
- yes
- Narcissistic Number
- no
- Collatz Steps
- 46
- 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
- Sum of 5th powers: 0^5 + 1^5 + 2^5 + ... + n^5.at n=5A000539
- a(n) = 1^n + 2^n + ... + 5^n.at n=5A001552
- Number of inequivalent ways to color vertices of a regular tetrahedron using <= n colors.at n=15A006008
- For any circular arrangement of 0..n-1, let S = sum of squares of every sum of two contiguous numbers; then a(n) = # of distinct values of S.at n=29A007773
- Coordination sequence T1 for Zeolite Code AET.at n=46A008007
- Coordination sequence T2 for Zeolite Code AET.at n=46A008008
- Coordination sequence T2 for Zeolite Code VSV.at n=43A009915
- a(n) = Sum_{j=1..n} j*prime(j).at n=15A014285
- Number of rooted unlabeled trees on n nodes having a primary branch.at n=11A027415
- A convolution triangle of numbers obtained from A036083.at n=33A030527
- a(n) = Sum_{k=1..n} k^n.at n=4A031971
- Maximum number of trapezoids that can be formed by n lines in plane.at n=17A037984
- Numbers whose base-4 representation contains exactly two 0's and four 1's.at n=26A045027
- Numbers whose base-5 representation contains exactly three 0's and two 2's.at n=12A045186
- Expansion of 1/((1+x)*(1-2*x+2*x^2-2*x^3)).at n=21A052942
- Numbers m such that there are precisely 3 groups of order m.at n=23A055561
- T(2n+4,n), where T is the array in A055830.at n=4A055838
- Integers that are Rhonda numbers to base 12.at n=3A100971
- Indices of primes in sequence defined by A(0) = 61, A(n) = 10*A(n-1) - 9 for n > 0.at n=22A101517
- Indices of primes in the sequence defined by A(0) = 53, A(n) = 10*A(n-1) + 63 for n > 0.at n=17A101590