5951
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 20
- Digital Root
- 2
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 6504
- Proper Divisor Sum (Aliquot Sum)
- 553
- 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
- 5400
- Möbius Function
- 1
- Radical
- 5951
- 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
- 49
- 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
- Odd-indexed terms of A124297.at n=4A001604
- a(n) = (n + 3)*(n^2 + 6*n + 2)/6.at n=30A005286
- Positive integers n such that 2^n == 2^11 (mod n).at n=60A015935
- Pseudoprimes to base 48.at n=34A020176
- Strong pseudoprimes to base 48.at n=11A020274
- a(n) = (n+1)*(5*n^2+4*n+1).at n=10A027849
- Least term in period of continued fraction for sqrt(n) is 7.at n=12A031431
- Number of different products of partitions of n; number of partitions of n into prime parts (1 included); number of distinct orders of Abelian subgroups of symmetric group S_n.at n=47A034891
- (s(n)+1)/9, where s(n)=n-th base 9 palindrome that starts with 8.at n=33A043079
- Numbers whose base-4 representation contains exactly two 1's and four 3's.at n=22A045123
- Numbers whose consecutive digits differ by 4.at n=45A048406
- Sum of a(n) terms of 1/k^(4/5) first exceeds n.at n=24A056180
- Centered 10-gonal numbers.at n=34A062786
- Dimension of the space of weight n cuspidal newforms for Gamma_1( 67 ).at n=32A063340
- Initial terms associated with the arithmetic progressions in A086786.at n=17A087308
- Leading entries in triangle in A090548 and A113470.at n=17A090547
- a(n) = (15*n^2 + 5*n + 2)/2.at n=27A093500
- Expansion of psi(x^2) / f(-x) in powers of x where psi(), f() are Ramanujan theta functions.at n=27A098613
- a(n) = 6*n*(n-1) - 1.at n=32A103115
- a(n) = 5*F(n)^2 + 5*F(n) + 1, where F(n) = Fibonacci(n).at n=9A124297