5617
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
- 5796
- Proper Divisor Sum (Aliquot Sum)
- 179
- 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
- 5440
- Möbius Function
- 1
- Radical
- 5617
- 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
- 85
- 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
- Pseudoprimes to base 96.at n=23A020224
- Strong pseudoprimes to base 96.at n=6A020322
- Numbers k such that the continued fraction for sqrt(k) has period 37.at n=13A020376
- Lucky numbers with size of gaps equal to 20 (lower terms).at n=12A031902
- Numerators of continued fraction convergents to sqrt(78).at n=7A041138
- Numerators of continued fraction convergents to sqrt(312).at n=7A041588
- Numerators of continued fraction convergents to sqrt(320).at n=4A041604
- Numerators of continued fraction convergents to sqrt(557).at n=6A042066
- Numerators of continued fraction convergents to sqrt(702).at n=3A042350
- Sum of the 4th powers of the divisors of n is divisible by n.at n=8A046764
- Numbers n such that n | sigma_12(n).at n=13A055716
- Numbers k such that x^k + x^6 + 1 is irreducible over GF(2).at n=13A057476
- Numbers m such that DivisorSigma(8*k-4, m) mod m = 0 holds presumably for all k; that is, (8*k-4)-power-sums of divisors of m are divisible by m for all k.at n=3A066291
- One-sixtieth of the even leg of Pythagorean triangles whose other sides are both primes (other than 3, 5 or 13).at n=26A068485
- Centered 16-gonal numbers.at n=26A069129
- a(n) = row sum of triangle whose n-th row begins with n and contains n-1 smallest numbers coprime to n and greater than n.at n=47A081501
- a(n) = 10*n^2 - 6*n + 1.at n=23A087348
- Let m = number of ways of partitioning n into parts using all the parts of a subset of {1, 2, ..., n-1} whose sum of all parts of a subset is less than n; a(n) gives number of different subsets of {1, 2, ..., n-1} whose m is 0.at n=48A088528
- Short leg of primitive Pythagorean triangles having legs that add up to a square, sorted on hypotenuse.at n=14A089547
- Main diagonal of A101866.at n=38A101867