4551
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 15
- Digital Root
- 6
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 6384
- Proper Divisor Sum (Aliquot Sum)
- 1833
- 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
- 2880
- Möbius Function
- -1
- Radical
- 4551
- Omega Function (Ω)
- 3
- Little Omega Function (ω)
- 3
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
- 183
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- 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
- Number of strict 7th-order maximal independent sets in path graph.at n=55A007386
- Coordination sequence T10 for Zeolite Code MFI.at n=43A008162
- Coordination sequence T9 for Zeolite Code MFI.at n=43A008172
- Coordination sequence T2 for Coesite.at n=36A008268
- Numbers k such that Fibonacci(k) == 34 (mod k).at n=37A023180
- Lucky numbers that are decimal concatenations of n with n + 6.at n=5A032656
- If d,e are consecutive digits of n in base 7, then |d-e|>=5.at n=32A032995
- Number of partitions of n into parts not of the form 21k, 21k+2 or 21k-2. Also number of partitions with 1 part of size 1 and differences between parts at distance 9 are greater than 1.at n=34A035980
- Numerators of continued fraction convergents to sqrt(586).at n=7A042122
- Numbers k such that 111*2^k-1 is prime.at n=33A050581
- Number of partitions of n in which number of parts is not 2.at n=29A058984
- Dimension of the space of weight n cuspidal newforms for Gamma_1( 83 ).at n=16A063356
- a(n) = 3*n^2 + 12*n.at n=36A067707
- One-sixtieth of the even leg of Pythagorean triangles whose other sides are both primes (other than 3, 5 or 13).at n=24A068485
- Centered 14-gonal numbers.at n=25A069127
- Sum_{k=1..n} floor(n*(n-1)/(2*k)).at n=46A069627
- Number of two-rowed partitions of length 6.at n=20A070559
- Numbers k such that 2^k - 19 is prime.at n=18A096819
- Divisors of 10^15 - 1.at n=24A111117
- a(n) = a(n-1) + 2^A047240(n) for n>1, a(1)=1.at n=6A113841