2554
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 16
- Digital Root
- 7
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 3834
- Proper Divisor Sum (Aliquot Sum)
- 1280
- 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
- 1276
- Möbius Function
- 1
- Radical
- 2554
- 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
- yes
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 58
- 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
- yes
- Odd
- no
Appears in sequences
- Number of partitions into non-integral powers.at n=8A000333
- Number of non-degenerate fanout-free Boolean functions of n variables using And, Or, Xor, Not, and Majority gates.at n=4A005617
- Coordination sequence T2 for Zeolite Code BRE.at n=33A008059
- Coordination sequence T4 for Zeolite Code HEU.at n=33A008119
- Coordination sequence T3 for Zeolite Code MEP.at n=30A008159
- Coordination sequence for CaF2(1), F position.at n=17A009924
- Numbers k such that the continued fraction for sqrt(k) has period 9.at n=20A010339
- Expansion of 1/((1-x)*(1-5*x)*(1-11*x)).at n=3A016238
- Numbers with exactly 6 1's in their ternary expansion.at n=21A023697
- T(2n,n+4), T given by A026747.at n=4A026864
- a(n) = n^2 + n + 4.at n=50A027689
- 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 4.at n=18A031417
- Numbers k such that 235*2^k+1 is prime.at n=22A032494
- Coordination sequence T4 for Zeolite Code SBS.at n=40A033611
- Number of partitions of n into parts 3k+1 and 3k+2 with at least one part of each type.at n=34A035620
- Number of partitions of n into parts 6k+2 and 6k+4 with at least one part of each type.at n=69A035647
- Base-5 palindromes that start with 4.at n=14A043009
- Numbers n such that string 4,7 occurs in the base 9 representation of n but not of n-1.at n=34A044294
- Numbers n such that string 5,4 occurs in the base 10 representation of n but not of n-1.at n=28A044386
- Numbers n such that string 4,7 occurs in the base 9 representation of n but not of n+1.at n=34A044675