2552
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 14
- Digital Root
- 5
- Palindromic Number
- yes
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 16
- Divisor Sum
- 5400
- Proper Divisor Sum (Aliquot Sum)
- 2848
- Abundant Number
- yes
- Perfect Number
- no
- Deficient Number
- no
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 1120
- Möbius Function
- 0
- Radical
- 638
- Omega Function (Ω)
- 5
- 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
- 58
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- Squarefree Number
- no
- 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) = (n+1)*(n+3)*(n+8)/6.at n=22A000297
- Number of paraffins C_n H_{2n-1} X_3 with n carbon atoms.at n=9A000641
- Number of (undirected) Hamiltonian paths in the n-ladder graph K_2 X P_n.at n=50A003682
- Number of paraffins.at n=21A005998
- Let S denote the palindromes in the language {0,1}*; a(n) = number of words of length n in the language SS.at n=14A007055
- Coordination sequence T7 for Zeolite Code MFI.at n=32A008170
- Coordination sequence T4 for Zeolite Code TON.at n=31A008244
- Coordination sequence T1 for Scapolite.at n=32A008262
- If a, b in sequence, so is ab+8.at n=17A009331
- Coordination sequence for Cr3Si, Si position.at n=13A009927
- a(n) = n^2 + n + 2.at n=50A014206
- Strobogrammatic numbers: numbers that are the same upside down (using calculator-style numerals).at n=51A018846
- Coordination sequence T1 for Zeolite Code CGF.at n=35A019451
- Numbers k such that the period of the continued fraction for sqrt(k) contains exactly five 1's.at n=24A020441
- Numbers with exactly 6 1's in their ternary expansion.at n=20A023697
- Integer part of ((4th elementary symmetric function of 2,3,...,n+4)/(2nd elementary symmetric function of 2,3,...,n+4)).at n=15A024181
- a(n) = T(2n,n-1), where T is the array defined in A025177.at n=5A025187
- a(n) = T(2n,n-1), where T is the array in A026148.at n=5A026160
- a(n) = T(2*n, n+2), T given by A026998.at n=4A027001
- a(n) = greatest number in row n of array T given by A026998.at n=12A027008