14581
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 19
- Digital Root
- 1
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 16672
- Proper Divisor Sum (Aliquot Sum)
- 2091
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 12492
- Möbius Function
- 1
- Radical
- 14581
- 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
- 45
- 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 such that k^8 == 1 (mod 9^3).at n=40A056084
- Semiprimes in A033951.at n=19A113691
- Minimal number m such that Sum_digits(n*m)=n.at n=47A131382
- a(n) = 729*n + 1.at n=19A158397
- a(n) = 20*n^2 + 1.at n=27A158493
- Number of nonnegative integer arrays of length n+2*3-2 with new values introduced in order 0 upwards and every value appearing only in runs of at least 3.at n=17A211695
- Semiprimes of the form 5*n^2 + 1.at n=16A212707
- a(n) = Sum_{i=0..n} digsum_7(i)^3, where digsum_7(i) = A053828(i).at n=46A231678
- The broken eggs problem.at n=34A256101
- Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 793", based on the 5-celled von Neumann neighborhood.at n=24A273566
- Number of points of norm <= n in the bi-truncated cubic honeycomb (3-dimensional lattice, with truncated-octahedral cells).at n=15A276450
- Number of integer solutions to (x_1)^2 + (x_2)^2 + ... + (x_9)^2 <= n.at n=6A341398
- Number of strict compositions of n with all adjacent parts (x, y) satisfying x <= 2y and y <= 2x.at n=46A342342
- Numbers that are the sum of four positive cubes in five or more ways.at n=38A343987
- Numbers that are the sum of four third powers in six or more ways.at n=5A345148
- Numbers that are the sum of four third powers in exactly six ways.at n=4A345149
- G.f. A(x) satisfies: A(x) = 1 + x + x^2 + x^3 + x^4 + x^5 * A(x/(1 - x)) / (1 - x)^2.at n=16A351754
- Number of set partitions of strict integer partitions of n into intervals, where an interval is a set of positive integers with all differences of adjacent elements equal to 1.at n=50A356957
- Smallest m such that A357477(m) = n.at n=29A357675
- Number of edge-4-critical graphs on n unlabeled vertices.at n=8A358316