11254
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 13
- Digital Root
- 4
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 17928
- Proper Divisor Sum (Aliquot Sum)
- 6674
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 5280
- Möbius Function
- -1
- Radical
- 11254
- 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
- 60
- 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 restricted 3 X 3 matrices with row and column sums n.at n=46A005045
- Number of partitions satisfying (cn(2,5) = cn(3,5) and cn(0,5) <= cn(1,5) and cn(0,5) <= cn(4,5)).at n=47A036805
- Denominators of continued fraction convergents to sqrt(526).at n=9A042007
- a(n) = (n+1)*2^n - n.at n=10A048493
- 22-gonal numbers: a(n) = n*(10*n-9).at n=34A051874
- Numbers n such that n*359# +-1 are twin primes, where 359# = 72nd primorial (A002110(72)).at n=11A087907
- a(n) = (3+n)*(2 + 33*n + n^2)/6.at n=31A101860
- a(n) = (n/2) * Sum_{k=0..n} binomial(n,k)/gcd(n,k).at n=10A105861
- Absolute row sums of triangle A107102, which is the matrix inverse of A100862.at n=6A107104
- Sum of the differences between the largest part and smallest part over all partitions of n into distinct parts.at n=36A117455
- Numbers k such that k and k^2 use only the digits 1, 2, 4, 5 and 6.at n=49A136988
- Binomial transform of [1, 11, 11, 11, ...].at n=10A139635
- Number of Fibonacci integers in the interval [1, 10^n].at n=4A185060
- Number of nX3 0..3 arrays with all rows and columns having a nonnegative second derivative in a quadratic least squares fit, with one and two element arrays taken as having a zero second derivative.at n=2A223405
- T(n,k)=Number of nXk 0..3 arrays with all rows and columns having a nonnegative second derivative in a quadratic least squares fit, with one and two element arrays taken as having a zero second derivative.at n=12A223406
- Numerator of rational approximation of sqrt(3)/2 within a tolerance 10^(-n).at n=8A240198
- Indices of primes in the 7th-order Fibonacci number sequence, A060455.at n=39A253318
- Numbers k such that R_k + 40 is prime, where R_k = 11...1 is the repunit (A002275) of length k.at n=11A256725
- Number of partitions of n containing no part i of multiplicity i-1.at n=36A277102
- Nonprime numbers k such that the sum of the divisors of k^2 is of the form m^2 + m + 1.at n=25A289385