4503
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 12
- Digital Root
- 3
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 6400
- Proper Divisor Sum (Aliquot Sum)
- 1897
- 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
- 2808
- Möbius Function
- -1
- Radical
- 4503
- 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
- 38
- 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
- no
- Odd
- yes
Appears in sequences
- Numbers that are the sum of 4 positive 7th powers.at n=10A003371
- Numbers that are the sum of at most 4 positive 7th powers.at n=29A004866
- Numbers that are the sum of at most 5 positive 7th powers.at n=41A004867
- Numbers k such that k, k+1, k+2 and k+3 have the same number of divisors.at n=2A006601
- Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite DDR = Deca-dodecasil 3R[Si120O240]qR starting with a T6 atom.at n=11A019108
- a(n) = n*(25*n - 1)/2.at n=19A022282
- Fibonacci sequence beginning 7, 15.at n=13A022389
- Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 44.at n=25A031542
- Sets of 4 consecutive numbers with equal number of divisors.at n=8A039665
- Numerators of continued fraction convergents to sqrt(134).at n=8A041244
- Same rule as Aitken triangle (A011971) except a(0,0)=1, a(1,0)=0.at n=41A046934
- Sequence formed from rows of triangle A046934.at n=32A046935
- a(n)/n^2 is the minimal average squared Euclidean distance of n points to their center of gravity among all configurations of n points on the hexagonal lattice.at n=31A059518
- Position of first repeat of the opening sequence of length n occurring after the first repeat of the opening sequence of length n-1 in the Kolakoski sequence (A000002).at n=23A074300
- a(1) = 7 then the smallest number such that the forward as well as the reverse n-th partial concatenation is a prime for n>1. (Reverse concatenation is taken term-wise and not digit-wise).at n=17A083994
- Sum of first n 3-almost primes.at n=44A086062
- Number of partitions of n which represent first player winning Chomp positions with multiple winning moves.at n=32A112473
- a(n) is the smallest positive integer m such that 4^k + m is prime for all k=1,2,...,n.at n=11A130003
- a(n) is the smallest positive integer m such that 4^k + m is prime for all k=1,2,...,n.at n=10A130003
- a(n) is the smallest positive integer m such that 4^k + m is prime for all k=1,2,...,n.at n=9A130003