5401
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 10
- Digital Root
- 1
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 5904
- Proper Divisor Sum (Aliquot Sum)
- 503
- 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
- 4900
- Möbius Function
- 1
- Radical
- 5401
- 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
- Squares written in base 6.at n=35A001741
- Coordination sequence T3 for Zeolite Code FER.at n=45A008108
- Positive integers n such that 2^n == 2^11 (mod n).at n=58A015935
- Fibonacci sequence beginning 3, 7.at n=15A022120
- Least m such that if r and s in {1/3, 1/6, 1/9, ..., 1/3n} satisfy r < s, then r < k/m < (k+1)/m < s for some integer k.at n=32A024838
- a(n) = Sum_{k=0..n} (k+1) * A026692(n, k).at n=9A026995
- Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 52 ones.at n=6A031820
- Denominators of continued fraction convergents to sqrt(38).at n=4A041063
- Denominators of continued fraction convergents to sqrt(152).at n=4A041279
- Denominators of continued fraction convergents to sqrt(213).at n=9A041397
- Denominators of continued fraction convergents to sqrt(342).at n=4A041647
- Denominators of continued fraction convergents to sqrt(608).at n=8A042167
- Denominators of continued fraction convergents to sqrt(950).at n=14A042839
- Number of starting positions of Nim with 2n pieces such that 2nd player wins. Partitions of 2n such that xor-sum of partitions is 0.at n=21A048833
- a(n) = (Fibonacci(2n-1) - Fibonacci(n+1))/2.at n=11A056014
- a(n) = floor(exp(n/Pi)).at n=26A062121
- Semiprimes p1*p2 such that p2>p1 and p2 mod p1 = 7.at n=26A064905
- Composite numbers with all divisors congruent to 1 mod 10.at n=39A068872
- Centered 18-gonal numbers.at n=24A069131
- a(0) = 1; a(n) = half of the a(n-1)-th even nontotient number.at n=8A071598