5265
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 18
- Digital Root
- 9
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 20
- Divisor Sum
- 10164
- Proper Divisor Sum (Aliquot Sum)
- 4899
- 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
- 2592
- Möbius Function
- 0
- Radical
- 195
- Omega Function (Ω)
- 6
- 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
- 41
- 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
- no
- Odd
- yes
Appears in sequences
- Generalized Stirling numbers, [n+7,7]_4.at n=3A001718
- Coordination sequence T12 for Zeolite Code MFI.at n=46A008164
- Coordination sequence T7 for Zeolite Code MFI.at n=46A008170
- Numbers that are the sum of 4 distinct positive cubes in exactly 3 ways.at n=25A025410
- Numbers that are the sum of 4 distinct positive cubes in 3 or more ways.at n=26A025413
- a(n) = (1/2)*A026907(2*n, n).at n=4A026909
- Weight enumerator of [ 40,19,10 ] shortened QR code.at n=14A030645
- Multiplicity of highest weight (or singular) vectors associated with character chi_142 of Monster module.at n=37A034530
- Number of partitions of n into parts not of form 4k+2, 24k, 24k+9 or 24k-9. Also number of partitions in which no odd part is repeated, with at most 4 parts of size less than or equal to 2 and where differences between parts at distance 5 are greater than 1 when the smallest part is odd and greater than 2 when the smallest part is even.at n=43A036033
- Number of perifusenes with one internal vertex.at n=10A038382
- Number of perifusenes with one internal vertex.at n=10A038383
- Numerators of continued fraction convergents to sqrt(937).at n=7A042812
- Base-8 palindromes that start with 1.at n=36A043021
- Numbers having three 2's in base 8.at n=35A043431
- Odd numbers divisible by exactly 6 primes (counted with multiplicity).at n=13A046319
- a(n) = a(n-1) + a(m) for n >= 4, where m = 2^(p+1) + 2 - n and p is the unique integer such that 2^p < n - 1 <= 2^(p+1), starting with a(1) = 1, a(2) = 2, and a(3) = 4.at n=39A050053
- Numbers n such that n | 10^n + 9^n + 8^n + 7^n + 6^n + 5^n.at n=48A057259
- McKay-Thompson series of class 40C for Monster.at n=41A058664
- Numbers of the form (10*a + b)^2 + (10*b + a)^2 with a and b less than 10, in numerical order.at n=24A061191
- Numbers k such that k and its reversal are both multiples of 15.at n=24A062905