6059
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 20
- Digital Root
- 2
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 6216
- Proper Divisor Sum (Aliquot Sum)
- 157
- 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
- 5904
- Möbius Function
- 1
- Radical
- 6059
- 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
- 142
- 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
- a(n) = (12*n+1)*(12*n+11).at n=6A001538
- Number of meanders in which first bridge is 7.at n=8A006662
- Numbers k such that the continued fraction for sqrt(k) has period 54.at n=37A020393
- 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 77.at n=8A031575
- A064434(n) = 0.at n=7A064456
- Semiprimes p1*p2 such that p2 mod p1 = 10, with p2 > p1.at n=33A064908
- Sums of members of groups in A076062.at n=22A076060
- a(n) = prime(n)*prime(n+2).at n=20A090076
- Numbers n such that b(n)/n - 1/2 < 1/k for all k > n, where b(n) is A004001.at n=21A095899
- Analogous to the oblong (promic or heteromecic) sequence formed but with reversal digits of factors multiplied.at n=36A102069
- Triangle P, read by rows, such that P^2 transforms column k of P into column k+1 of P, so that column k of P equals column 0 of P^(2*k+1), where P^2 denotes the matrix square of P.at n=22A113340
- Column 1 of triangle A113340, also equals column 0 of A113340^3.at n=5A113341
- Matrix cube of triangle A113340.at n=15A113360
- Triangle, read by rows, given by the product Q^2*P^-1, where the triangular matrices involved are P = A113340 and Q = A113350.at n=15A113369
- a(1) = 4; a(n) is smallest semiprime > 2*a(n-1).at n=10A117880
- Composite numbers k such that k+d+1 is prime for all divisors d of k greater than 1.at n=42A120776
- Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 1101-0111-0100 pattern in any orientation.at n=9A146862
- Bisection of toothpick sequence A139250.at n=55A159791
- a(n) = prime(n) times the n-th nonnegative noncomposite.at n=22A176098
- T(n,k)=number of nXk binary matrices with rows and columns in lexicographically strictly increasing order.at n=69A180984