5774
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 23
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 8664
- Proper Divisor Sum (Aliquot Sum)
- 2890
- 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
- 2886
- Möbius Function
- 1
- Radical
- 5774
- 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
- yes
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 129
- 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+1) = a(n)-th composite number, with a(0) = 1.at n=29A006508
- a(n) = T(n,n), T given by A026519. Also a(n) = number of integer strings s(0), ..., s(n), counted by T, such that s(n) = 0.at n=12A026520
- a(n) = T(n,n), T given by A026536. Also a(n) = number of integer strings s(0), ..., s(n), counted by T, such that s(n)=0.at n=12A026537
- a(n) = self-convolution of row n of array T given by A026519.at n=6A027262
- a(n) = self-convolution of row n of array T given by A026536.at n=6A027267
- Self-convolution of array T given by A026082.at n=6A027315
- Duplicate of A027315.at n=6A027321
- Squarefree n such that Q(sqrt(n)) has class number 5.at n=43A029705
- 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 74.at n=23A031572
- Number of series-reduced dyslexic planted compound windmills with n leaves of 2 colors where any 2 submills extending from the same node are different.at n=9A032238
- a(n)^2 is smallest square starting with a string of n 3's.at n=3A034982
- Sum of first n primes of form 4k+1.at n=33A038346
- Number of right triangles of a given area required to form successively larger squares.at n=37A060626
- Numbers with no zeros in their cubes such that the products of the digits of their cubes are also cubes.at n=41A067071
- a(n)^2 + 1 is largest prime of the form x^2 + 1 <= 2^n.at n=24A083848
- Numbers n such that 9*2^(2*n-1) - 1 is prime.at n=27A091996
- a(1)= 10000, a(2)= 10000; for n>2, a(n)= ( a(n-2) + a(n-1) ) (mod 20000).at n=35A096973
- Least k such that k*M#(n) - 1 is prime where M#(n) is the product of the first n Mersenne primes.at n=16A098919
- Even elements of A085493.at n=8A106431
- Number of unrooted two-face maps in the plane (considered up to orientation-preserving homeomorphism) with the faces of equal degree n: planar maps with a distinguished outside face.at n=10A113183