2533
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 13
- Digital Root
- 4
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 2700
- Proper Divisor Sum (Aliquot Sum)
- 167
- 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
- 2368
- Möbius Function
- 1
- Radical
- 2533
- 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
- 32
- 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
- Number of partitions of n into parts 5k+1 or 5k+4.at n=59A003114
- Coordination sequence T1 for Zeolite Code AFT.at n=38A008026
- Coordination sequence T12 for Zeolite Code MFI.at n=32A008164
- Coordination sequence T1 for Banalsite.at n=30A008249
- Coordination sequence T2 for Banalsite.at n=30A008250
- Coordination sequence T2 for Zeolite Code AFX.at n=38A009865
- Number of trees on n nodes with forbidden limbs.at n=15A014279
- Expansion of g.f. 1/((1-7*x)*(1-10*x)).at n=3A016181
- Index of 5^n within sequence of numbers of form 2^i * 5^j.at n=46A022334
- Number of partitions of n into prime power parts (1 excluded).at n=42A023894
- a(n) = floor( Sum_{1 <= i < j <= n} ((sqrt(j)-sqrt(i))^3) ).at n=25A025197
- Numbers with exactly five distinct base-7 digits.at n=5A031984
- Concatenation of n and n + 8 or {n,n+8}.at n=24A032613
- Odd composite numbers n such that the digit sum of n equals digit sum of sum of its prime factors (counted with multiplicity).at n=34A036923
- a()=A037260 and its first [ A037261 ], 2nd [ A037262 ] and 3rd [ A037263 ] differences together include every number at most once and are monotonic and minimal.at n=12A037260
- The sequence e, given that c is a left shift by one place of b.at n=53A041003
- Numbers n such that string 2,4 occurs in the base 9 representation of n but not of n-1.at n=35A044273
- Numbers n such that string 3,3 occurs in the base 10 representation of n but not of n-1.at n=25A044365
- Numbers n such that string 2,4 occurs in the base 9 representation of n but not of n+1.at n=35A044654
- Numbers n such that string 3,3 occurs in the base 10 representation of n but not of n+1.at n=25A044746