5374
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 19
- Digital Root
- 1
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 8064
- Proper Divisor Sum (Aliquot Sum)
- 2690
- 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
- 2686
- Möbius Function
- 1
- Radical
- 5374
- 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
- 98
- 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
- yes
- Odd
- no
Appears in sequences
- a(n) = ceiling(n*phi^11), where phi is the golden ratio, A001622.at n=27A004966
- Coordination sequence T6 for Zeolite Code MEL.at n=47A008155
- Expansion of e.g.f.: sec(tanh(x)+log(x+1))=1+4/2!*x^2-6/3!*x^3+83/4!*x^4-460/5!*x^5...at n=6A013127
- Numbers k such that the continued fraction for sqrt(k) has period 96.at n=6A020435
- a(n) is the n-th diagonal sum of left justified array T given by A027960.at n=26A027975
- 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=14A031570
- Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 44 ones.at n=13A031812
- Numbers k such that k^14 == 1 (mod 15^3).at n=6A056087
- Numbers k such that k^512 + 1 is prime.at n=15A057465
- The array in A059219 read by antidiagonals in 'up' direction.at n=39A059220
- The array in A059219 read by antidiagonals in the direction in which it was constructed.at n=41A059235
- Numbers n such that phi((prime(n)+1)/2)=sigma(n).at n=24A068473
- Numbers n such that [A070080(n), A070081(n), A070082(n)] is an isosceles integer triangle with integer area.at n=15A070145
- Numbers k such that [A070080(k), A070081(k), A070082(k)] is an obtuse integer triangle with integer area.at n=29A070147
- Numbers k such that [A070080(k), A070081(k), A070082(k)] is an integer Heronian triangle having triangular area.at n=13A070148
- a(n) is the smallest number x such that gcd(prime(x)+1,x+1) = n.at n=42A084316
- Number of positive words of length n in the monoid Br_4 of positive braids on 5 strands.at n=8A097551
- Semiprimes with prime sum of decimal digits and prime sum of prime factors.at n=43A108610
- Largest number that is not a sum of n distinct primes, or -1 if such a number does not exist.at n=49A124884
- a(n) = Catalan(n) + 2^n - 0^n.at n=9A141353