5007
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 12
- Digital Root
- 3
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 6680
- Proper Divisor Sum (Aliquot Sum)
- 1673
- 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
- 3336
- Möbius Function
- 1
- Radical
- 5007
- 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
- 64
- 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 T2 for Zeolite Code TON.at n=44A008242
- a(n) = [ a(n-1)/a(1) ] + [ a(n-2)/a(2) ] + ... + [ a(1)/a(n-1) ], for n >= 3.at n=19A022864
- n written in fractional base 10/5.at n=47A024660
- Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 46.at n=29A031544
- Numbers k such that 249*2^k+1 is prime.at n=35A032501
- T(n,n+2), array T as in A047150.at n=7A047157
- Number of partitions of the n-th prime into parts that are all primes.at n=19A056768
- Smaller terms in the pairs of numbers (a < b) in the sequence {a,b}-> {Max[{a,b}]-Min[{a,b}],k*Min[{a,b}]} with k=3 and the first pair {a=1,b=2}. See A075256.at n=40A075257
- Multiples of 3 in which there is no common digit in successive terms.at n=22A083491
- Left side of irregular triangle of natural numbers in which every row product is a multiple of the previous.at n=14A090905
- Left side of irregular triangle of natural numbers in which the n-th row has at least n terms and every row product is a multiple of the previous.at n=14A093911
- Self-describing sequence. See the sequence as a succession of digits: then a(n) is the position of a composite digit in the sequence.at n=45A114318
- a(n) = Floor[1/2((1-2/Sqrt[3])^n+(1-2/Sqrt[3])^n)].at n=12A116953
- Semiprimes s such that s-/+4 are primes.at n=31A125216
- Number of nonisomorphic disconnected mappings (or mapping patterns) from n points to themselves; number of disconnected endofunctions.at n=9A127912
- Numbers with at least two digits in which all digits except the rightmost are 0 or 5 and the rightmost is neither 0 nor 5.at n=29A144162
- Number of binary strings of length n with equal numbers of 0000 and 1001 substrings.at n=14A164153
- Partial sums of A036967.at n=12A176273
- a(n) = 4*n^2 + 3*n + 2.at n=35A185669
- Partial sums of A004111.at n=14A196118