5533
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
- 3
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 6048
- Proper Divisor Sum (Aliquot Sum)
- 515
- 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
- 5020
- Möbius Function
- 1
- Radical
- 5533
- 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
- 98
- 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
- Numbers k for which 10k+1, 10k+3, 10k+7 and 10k+9 are primes.at n=25A007811
- Numbers k such that the continued fraction for sqrt(k) has period 76.at n=7A020415
- a(n+1) = a(n) converted to base 9 from base 8 (written in base 10).at n=38A023391
- a(n) = integer nearest a(n-1)/(sqrt(7) - 2), where a(1) = 1.at n=19A024567
- Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 32 ones.at n=33A031800
- Number of partitions of n into parts 3k+1 and 3k+2 with at least one part of each type.at n=39A035620
- Denominators of continued fraction convergents to sqrt(409).at n=9A041777
- Discriminants of real quadratic fields with class number 1 and related continued fraction period length of 24.at n=27A051965
- The array described in A059513 read by antidiagonals in the 'up' direction.at n=22A059574
- The array described in A059513 read by antidiagonals in the direction of construction.at n=26A059575
- Semiprimes p1*p2 such that p2 > p1 and p2 mod p1 = 8.at n=28A064906
- Number of Grand Motzkin paths of length n with no zigzags, that is with no factors UDU and DUD.at n=10A078679
- Sum of trapezoid weights of all Schroeder paths of length 2n.at n=5A104553
- Number of partitions that are "3-close" to being self-conjugate.at n=37A108962
- a(-1)=0, a(0)=1 and recursively a(n) = prime(n)*(a(n-1)+a(n-2)).at n=5A109366
- Number of connected simple graphs with n vertices, n+1 edges, and vertex degrees no more than 4.at n=10A112410
- Semiprimes (A001358) made of nontrivial runs of identical digits.at n=12A116063
- Number of fused bicyclic skeletons with n carbon atoms (see Parks et al. for precise definition).at n=9A121165
- Expansion of 1/(1-x(1-12x)).at n=8A146084
- Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 1100-1000-1111 pattern in any orientation.at n=10A146685