4553
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
- 2
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 4740
- Proper Divisor Sum (Aliquot Sum)
- 187
- 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
- 4368
- Möbius Function
- 1
- Radical
- 4553
- 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
- 152
- 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
- Coordination sequence T9 for Zeolite Code EUO.at n=42A008104
- Expansion of tanh(tan(sin(x))).at n=6A009807
- Coordination sequence T6 for Zeolite Code TER.at n=45A016438
- Pseudoprimes to base 28.at n=23A020156
- Numbers k such that the continued fraction for sqrt(k) has period 11.at n=38A020350
- Fibonacci sequence beginning 1, 31.at n=12A022401
- a(1) = 5; a(n+1) = a(n)-th nonprime, where nonprimes begin at 1.at n=27A025005
- Number of partitions satisfying 0 < cn(0,5) + cn(1,5) + cn(4,5) + cn(2,5) and 0 < cn(0,5) + cn(1,5) + cn(4,5) + cn(3,5).at n=29A039904
- Discriminants of real quadratic fields with class number 2 and related continued fraction period length of 9.at n=11A051974
- Convolution of L(n+1) = A000204(n+1), n>=0, with L(n+4), n>=0.at n=8A067982
- a(n) = 1 + n + n[n/2] + n[n/2][n/3] +... + n[n/2][n/3]...[n/n], where [x]=ceiling(x).at n=8A075887
- a(n) = (prime(n)+1)*n - 1.at n=32A083723
- a(n) is the least positive integer such that the integer part of the arithmetic-geometric mean of a(n) and 1 is equal to 3^n.at n=6A090856
- a(n) = (n+1)*prime(n) + n*prime(n+1).at n=23A097240
- Column 10 of array illustrated in A089574 and related to A034261.at n=3A108538
- Number of partitions of n into at least two parts such that the product of largest and smallest part exceeds n.at n=48A116902
- a(n) = n^4 + 4*n^3 + 12*n^2 + 24*n + 24.at n=7A127878
- a(n) = numerator of b(n), where b(1)=1, b(n+1) = sum{k=1 to n} {b(n+1-k)/k} ({x} is the fractional part of x).at n=7A128191
- Number of trees on [n], rooted at 1, in which 2 is a descendant of 3.at n=6A129137
- Numbers k such that the continued fraction of (1 + sqrt(k))/2 has period 9.at n=30A143577