5587
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 25
- Digital Root
- 7
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 5776
- Proper Divisor Sum (Aliquot Sum)
- 189
- 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
- 5400
- Möbius Function
- 1
- Radical
- 5587
- 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
- no
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 111
- 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
- Representation degeneracies for boson strings.at n=26A005294
- Number of partitions of n that do not contain 8 as a part.at n=31A027342
- Numbers having period-6 5-digitized sequences.at n=39A031190
- Second 10-gonal (or decagonal) numbers: n*(4*n+3).at n=37A033954
- Positive numbers having the same set of digits in base 9 and base 10.at n=25A037443
- Denominators of continued fraction convergents to sqrt(835).at n=11A042613
- Denominators of continued fraction convergents to sqrt(973).at n=6A042883
- Generalized Bell numbers.at n=8A061697
- Group successively larger prime numbers so that the sum of the n-th group is a multiple of n. Sequence gives the group sum divided by n for the n-th group.at n=46A074131
- Integers of the form c(n)/b(n) where c(n+1)=c(n)+(n+1)^4 with c(0)=1 and b(n+1)=b(n)+(n+1)^2 with b(0)=1.at n=38A119617
- Triangle read by rows: T(n,k) is the number of partitions of the set {1,2,...,n} having exactly k blocks that contain both odd and even entries (0<=k<=floor(n/2)).at n=26A124418
- Triangle, read by rows, where T(n,k) = A049020([n/2],k)*A049020([(n+1)/2],k).at n=26A124526
- Integer part of Gauss's Arithmetic-Geometric Mean M(1,n^3).at n=34A127759
- a(n) = 15*n^2 + 9*n + 1.at n=19A134153
- Triangle of numbers obtained from the partition array A134284.at n=29A134285
- A156348 * A000010.at n=48A156834
- Numbers n with property that A100486(n) is square.at n=38A156913
- n times the n-th noncomposite.at n=36A164931
- Number of lower triangular n X n arrays colored with integers 0 upwards introduced in row major order, with no element equal to any element at a city block distance of two.at n=3A182382
- Digits of n and of n-1 interleaved in decimal representation.at n=57A184989