6253
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 16
- Digital Root
- 7
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 6
- Divisor Sum
- 6954
- Proper Divisor Sum (Aliquot Sum)
- 701
- 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
- 5616
- Möbius Function
- 0
- Radical
- 481
- Omega Function (Ω)
- 3
- 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
- 155
- 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
- Number of partitions of n, with three kinds of 1,2 and 3 and two kinds of 4,5,6,....at n=12A000715
- McKay-Thompson series of class 11A for the Monster group with a(0) = -5.at n=10A003295
- a(n) = ceiling(n*phi^13), where phi is the golden ratio, A001622.at n=12A004968
- a(n) = Fibonacci(n+1) - 2^floor(n/2).at n=19A005672
- Pseudoprimes to base 23.at n=40A020151
- Pseudoprimes to base 80.at n=34A020208
- Strong pseudoprimes to base 80.at n=10A020306
- Least k>1 such that first n terms of Kolakoski sequence A000002 repeat in reverse order beginning at k-th term.at n=28A022295
- Lucky numbers with size of gaps equal to 18 (lower terms).at n=38A031900
- Numbers k such that 173*2^k+1 is prime.at n=2A032463
- McKay-Thompson series of class 13A for the Monster group with a(0) = -2.at n=12A034318
- McKay-Thompson series of class 13A for the Monster group with a(0) = 0.at n=12A034319
- Number of partitions satisfying (cn(0,5) <= cn(1,5) = cn(4,5)).at n=45A036809
- Positive numbers having the same set of digits in base 6 and base 8.at n=40A037435
- Base-7 palindromes that start with 2.at n=45A043016
- Numbers having four 0's in base 5.at n=26A043352
- Number of cubic residues mod 6^n.at n=6A046634
- a(n)=T(n,n+3), array T as in A049735.at n=30A049743
- Matrix 6th power of partition triangle A008284.at n=58A050300
- McKay-Thompson series of class 11A for the Monster Group.at n=10A058205