5853
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 21
- Digital Root
- 3
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 7808
- Proper Divisor Sum (Aliquot Sum)
- 1955
- 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
- 3900
- Möbius Function
- 1
- Radical
- 5853
- 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
- The limiting sequence [A259095(r(r+1)/2-s,r), s=0,1,2,...,r-1] for very large r.at n=34A005576
- Coordination sequence T4 for Zeolite Code NON.at n=46A008215
- Nearest integer to Gamma(n + 3/7)/Gamma(3/7).at n=8A020032
- Ceiling of Gamma(n+3/7)/Gamma(3/7).at n=8A020122
- a(n) = least m such that if r and s in {1/1, 1/2, 1/3, ..., 1/n} satisfy r < s, then r < k/m < (k+2)/m < s for some integer k.at n=46A024840
- Numbers having period-1 7-digitized sequences.at n=35A031201
- 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 50.at n=29A031548
- Numbers whose set of base-11 digits is {1,4}.at n=28A032823
- Number of partitions in parts not of the form 9k, 9k+1 or 9k-1. Also number of partitions with no part of size 1 and differences between parts at distance 3 are greater than 1.at n=45A035940
- a(n)=T(n,n+1), array T as in A049735.at n=30A049741
- Numbers n such that n^2 contains exactly 8 different digits.at n=29A054036
- a(n) = 4*n^2 - 6*n + 3.at n=38A054569
- Fourth spoke of a hexagonal spiral.at n=44A056108
- a(n)/n^2 is the minimal average squared Euclidean distance of n points to their center of gravity among all configurations of n points on the hexagonal lattice.at n=34A059518
- Integers n > 879 such that the 'Reverse and Add!' trajectory of n joins the trajectory of 879.at n=29A063052
- a(n) = 16*n^2 + 4*n + 1.at n=19A082041
- Smallest number which requires n iterations to reach a prime when iterating x + sum of squares of digits of x.at n=33A094658
- Output of the linear congruential pseudo-random number generator rand() used in Microsoft's Visual C++.at n=11A096558
- Semiprimes in A056108.at n=13A113527
- Numbers k such that the k-th triangular number contains only digits {1,3,7}.at n=5A119118