1517
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 14
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 1596
- Proper Divisor Sum (Aliquot Sum)
- 79
- 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
- 1440
- Möbius Function
- 1
- Radical
- 1517
- 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
- 60
- 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
- Number of points of norm <= n^2 in square lattice.at n=22A000328
- a(n) = (6*n+1)*(6*n+5).at n=6A001513
- a(n) = (4*n+1)*(4*n+5).at n=9A003185
- a(n) = 3*n^2 + 3*n - 1.at n=22A004538
- Number of Hamiltonian circuits on 2n times 4 rectangle.at n=4A005389
- Number of symmetric plane partitions of n.at n=26A005987
- Products of 2 successive primes.at n=11A006094
- Number of Hamiltonian cycles in P_4 X P_n.at n=9A006864
- Coordination sequence T2 for Zeolite Code EMT.at n=32A008087
- Coordination sequence T2 for Zeolite Code MEL.at n=25A008151
- Coordination sequence T3 for Zeolite Code MEL.at n=25A008152
- Smallest number strictly greater than previous one which is the sum of squares of two previous distinct terms (a(1)=1, a(2)=2).at n=11A008318
- Expansion of tan(tan(x))*cos(x) (odd powers only).at n=3A009695
- a(n) = n*nextprime(n).at n=37A013636
- n*prevprime(n).at n=38A013637
- a(n) = prevprime(n)*nextprime(n).at n=35A013638
- a(n) = prevprime(n)*nextprime(n).at n=37A013638
- a(n) = prevprime(n)*nextprime(n).at n=36A013638
- Numbers n such that phi(n) * sigma(n) + 16 is a perfect square.at n=33A015729
- Expansion of 1/(1-x^4-x^5-x^6-x^7-x^8-x^9-x^10-x^11-x^12-x^13).at n=29A017835