5093
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 17
- Digital Root
- 8
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 5568
- Proper Divisor Sum (Aliquot Sum)
- 475
- 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
- 4620
- Möbius Function
- 1
- Radical
- 5093
- 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
- 33
- 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
- Numbers k such that the continued fraction for sqrt(k) has period 46.at n=40A020385
- a(n) = n*(21*n + 1)/2.at n=22A022279
- Numbers with exactly 6 2's in their ternary expansion.at n=35A023704
- Fibonacci iteration starting with (1, a(n)) leads to a "nine digits anagram".at n=9A034587
- Numerators of continued fraction convergents to sqrt(655).at n=6A042258
- Numbers having four 3's in base 5.at n=23A043364
- Starting positions of strings of 2 0's in the decimal expansion of Pi.at n=38A050201
- Discriminants of real quadratic fields with class number 1 and related continued fraction period length of 14.at n=27A050963
- Trajectory of 13 under the '13x+1' map.at n=13A057684
- Dimension of the space of weight n cuspidal newforms for Gamma_1( 75 ).at n=37A063348
- Numbers n such that phi((prime(n)+1)/2)=sigma(n).at n=22A068473
- Interprimes which are of the form s*prime, s=11.at n=4A075286
- Numbers n such that n and n+1 both are members of A074997; i.e., on the one hand n-1 and n+1 have the same prime signature, on the other hand n and n+2 have the same prime signature.at n=31A086540
- Numbers n such that p(2n) is prime, where p(n) is the number of partitions of n.at n=41A114165
- Number of different polyominoes with maximum area of the convex hull.at n=43A122133
- Odd interprimes divisible by 11.at n=28A126230
- a(0)=0. a(n) = a(n-1) + sum of positive integers which are <= n and not part of the sequence.at n=32A129694
- a(n) = C(2,n) DELTA C(0,n).at n=29A147721
- Denomination sequence. Start with the 0th and first coins of value 1 cent: a(0)=a(1)=1. Thereafter a(n), the value of the n-th coin (n>=2), is the number of ways to make change for n cents in earlier coins. The two one-cent coins are considered distinct.at n=41A151945
- Number of toothpicks after n stages of 3-D toothpick structure defined in Comments.at n=20A170876