5345
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
- 6420
- Proper Divisor Sum (Aliquot Sum)
- 1075
- 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
- 4272
- Möbius Function
- 1
- Radical
- 5345
- 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
- 160
- 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
- Number of 4-dimensional partitions of n.at n=8A000334
- Number of M-sequences from multicomplexes on at most 5 variables with no monomial of degree greater than n.at n=5A007065
- Triangle a(n,k) of number of M-sequences read by antidiagonals.at n=60A007723
- Coordination sequence T2 for Coesite.at n=39A008268
- Duplicate of A007065.at n=5A011802
- Number of M-sequences m_0,...,m_4 with m_1 < n.at n=5A011820
- a(n) = floor( n*(n-1)*(n-2)/22 ).at n=50A011904
- Every suffix prime and no 0 digits in base 6 (written in base 6).at n=42A024781
- [ exp(1/17)*n! ].at n=6A030899
- Number of partitions of n with equal nonzero number of parts congruent to each of 0, 2 and 3 (mod 4).at n=51A046780
- Numbers k such that 181*2^k-1 is prime.at n=34A050842
- a(n) = -a(n-1) - a(n-2) + a(n-3), a(0)=0, a(1)=0, a(2)=1.at n=31A057597
- Engel expansion for (positive) constant defined in A078756.at n=7A080230
- Main diagonal of square array A082025.at n=39A082189
- a(n) = a(n-1) + a(n-2) + a(n-3); a(0) = -1, a(1) = 2, a(2) = 2.at n=15A100683
- Numbers k such that 4*10^k+3 is prime.at n=12A101397
- a(1) = 668; for n > 1, a(n) = a(n-1) + 1 + sum of distinct prime factors of a(n-1) that are < a(n-1).at n=22A105212
- Numbers k such that 10^k*(66161819199+10^(k+10)) + 1 is prime.at n=10A107465
- Numbers k such that L(2*k + 1) is prime, where L(m) is a Lucas number.at n=28A117522
- Connell (3,5)-sum sequence (partial sums of the (3,5)-Connell sequence).at n=61A122796