1054
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
- 8
- Divisor Sum
- 1728
- Proper Divisor Sum (Aliquot Sum)
- 674
- 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
- 480
- Möbius Function
- -1
- Radical
- 1054
- 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
- 80
- 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
- a(n) = (5*n+1)*(5*n+4).at n=6A001545
- Numbers k such that (k^2 + k + 1)/21 is prime.at n=47A002644
- Numbers that are the sum of 11 positive 6th powers.at n=17A003367
- Nonsquare values of m in the discriminant D = 4*m leading to a new maximum of the L-function of the Dirichlet series L(1) = Sum_{k>0} Kronecker(D,k)/k.at n=21A003421
- Numbers k where |cos(k)| (or |cosec(k)| or |cot(k)|) decreases monotonically to 0; also numbers k where |tan(k)| (or |sec(k)|, or |sin(k)|) increases.at n=8A004112
- a(n) = 2*(2^n + 1)*(2^(n+1) - 1).at n=4A005367
- Centered triangular numbers: a(n) = 3*n*(n-1)/2 + 1.at n=26A005448
- Numerators of convergents to log_2(3) = log(3)/log(2).at n=8A005663
- Numbers k such that k^8 + 1 is prime.at n=43A006314
- a(n) = a(n-1) + a(n - 1 - number of even terms so far).at n=25A006336
- Coordination sequence T2 for Zeolite Code AFS.at n=25A008024
- Coefficient of x^n in (Product_{m=1..n}(1-x^m))^n.at n=10A008705
- Expansion of (1 + 2*x^2 + x^3)/((1 - x)^2*(1 - x^3)).at n=39A008822
- Expansion of Product (1 - x^k)^10 in powers of x.at n=10A010818
- n*prevprime(n).at n=31A013637
- Pisot sequence E(10,18), a(n)=[ a(n-1)^2/a(n-2)+1/2 ].at n=8A014006
- Numbers k such that sigma(k) = sigma(k+11).at n=5A015881
- Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite AET = AlPO4-8 [Al36P36O144] starting with a T5 atom.at n=4A018951
- Numbers k such that the continued fraction for sqrt(k) has period 36.at n=4A020375
- Numbers whose sum of divisors is a cube.at n=13A020477