5954
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 23
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 9660
- Proper Divisor Sum (Aliquot Sum)
- 3706
- 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
- 2736
- Möbius Function
- -1
- Radical
- 5954
- Omega Function (Ω)
- 3
- 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
- 142
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- 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
- yes
- Odd
- no
Appears in sequences
- Number of unrooted triangulations with reflection symmetry of a pentagon with n internal nodes.at n=8A005506
- Coordination sequence T6 for Zeolite Code MTT.at n=47A008194
- Numbers k such that the continued fraction for sqrt(k) has period 3.at n=21A013643
- Number of partitions of n into an even number of parts, the least being 2; also, a(n+2) = number of partitions of n into an odd number of parts, each >=2.at n=45A027194
- [ exp(1/6)*n! ].at n=6A030969
- Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted then there are a pair of central terms both equal to 6.at n=20A031419
- Least term in period of continued fraction for sqrt(n) is 6.at n=30A031430
- "EFK" (unordered, size, unlabeled) transform of 2,4,6,8,...at n=13A032309
- Numbers m such that the factorizations of m..m+3 have the same number of primes (including multiplicities).at n=26A045940
- Number of asymmetric (identity) trees with n nodes and 4 leaves.at n=28A055335
- Dimension of the space of weight n cuspidal newforms for Gamma_1( 73 ).at n=27A063346
- a(1) = 1, a(n+1) is the smallest number such that there are n primes between a(n) and a(n+1) exclusive.at n=39A075342
- Greatest number m with A088444(m) = n.at n=25A088448
- Where records occur in A096287.at n=9A096729
- Number of compositions into a prime number of distinct parts.at n=26A102623
- Numbers n such that n, n+1, n+2 and n+3 are products of exactly 3 primes.at n=25A124057
- Records in A018892.at n=41A126097
- a(n) = Sum_{m=1..n} gcd(s(n,m), S(n,m)), where s(n,m) is an unsigned Stirling number of the first kind and S(n,m) is a Stirling number of the second kind.at n=11A128266
- Triangle read by rows: T(n,k) is the number of skew Dyck paths of semilength n and having k peaks of height >1 (n >= 1; 0 <= k <= n-1).at n=38A128747
- Binomial transform of [1, 3, 3, 1, 1, -1, 1, -1, 1, ...].at n=26A140226