5063
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 14
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 5208
- Proper Divisor Sum (Aliquot Sum)
- 145
- 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
- 4920
- Möbius Function
- 1
- Radical
- 5063
- 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
- 134
- 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
- a(n) is the smallest positive number such that the sum of A001032(n) consecutive squares starting with a(n)^2 is a square.at n=37A007475
- a(n) = [ a(n-1)/a(1) ] + [ a(n-2)/a(2) ] + ... + [ a(1)/a(n-1) ], for n >= 3.at n=16A022858
- Upper members of a "good pair" of the form (k, 2*k +- 1).at n=34A046862
- Composite numbers x such that sigma(x+120) = sigma(x)+120.at n=19A054985
- Number of tame meanders with 2n crossings.at n=5A060066
- Numbers k such that k^2 is the sum of the first m primes for some m.at n=1A061888
- Sum of n-th antidiagonal of array in A082002.at n=17A082005
- Composite numbers k such that the continued fraction for k/m contains no 2 for any 1 <= m <= k.at n=14A082409
- Brilliant numbers (A078972) whose digital sum is also brilliant.at n=45A085648
- Number of partitions of n such that the least part occurs exactly five times.at n=42A097093
- Brilliant numbers (A078972) whose digit reversal is the product of 2 palindromes greater than 1.at n=16A115681
- a(n) = 5*n^2/2 - 5*n + 13/4 - (-1)^n/4.at n=45A121509
- Integers 1 through n written in primorial base, summed as if decimal.at n=24A122613
- Triangle read by rows: (A000012 * A136572 + A136572 * A000012) - A000012.at n=32A136573
- Similar to A072921 but starting with 4.at n=30A152233
- Number of binary strings of length n with no substrings equal to 0010 or 0101.at n=14A164401
- Products of exactly two Pillai primes.at n=30A181414
- n - (sum of prime factors of n^2+1) is a positive square.at n=23A216896
- The average of primes dividing n and n+1 is the same.at n=2A227754
- Subrecords in A048673: maximum value between two consecutive records in A048673.at n=13A247284