875
domain: N
Properties
Digital Properties
- Digit Count
- 3
- Digit Sum
- 20
- Digital Root
- 2
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 1248
- Proper Divisor Sum (Aliquot Sum)
- 373
- 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
- 600
- Möbius Function
- 0
- Radical
- 35
- Omega Function (Ω)
- 4
- 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
- 28
- Smith Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- Squarefree Number
- no
- 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
Names
- German
- achthundertfünfundsiebzig· ordinal: achthundertfünfundsiebzigste
- English
- eight hundred seventy-five· ordinal: eight hundred seventy-fifth
- Spanish
- ochocientos setenta y cinco· ordinal: 875º
- French
- huit cent soixante-quinze· ordinal: huit cent soixante-quinzième
- Italian
- ottocentosettantacinque· ordinal: 875º
- Latin
- octingenti septuaginta quinque· ordinal: 875.
- Portuguese
- oitocentos e setenta e cinco· ordinal: 875º
Appears in sequences
- a(n) = Sum_{k=1..n-1} k^3*sigma(k)*sigma(n-k).at n=4A000499
- a(n) = (12*n+1)*(12*n+11).at n=2A001538
- a(n+6) = -a(n+5) + a(n+4) + 3a(n+3) + a(n+2) - a(n+1) - a(n). a(n) = sign(n) if abs(n)<=3.at n=24A001945
- Idempotent semigroups of order n, considered to be equivalent when they are isomorphic or anti-isomorphic (by reversal of the operator).at n=6A002788
- Schur's 1926 partition theorem: number of partitions of n into parts 6n+1 or 6n-1.at n=58A003105
- Numbers of the form 5^i*7^j with i, j >= 0.at n=11A003595
- Expansion of (1-x)/( (1+x)*(1-2*x)*(1-3*x)*(1-4*x)).at n=4A004057
- a(n) = 7*5^n.at n=3A005055
- Coordination sequence T4 for Zeolite Code MFI.at n=19A008167
- Coordination sequence T7 for Zeolite Code MFI.at n=19A008170
- Expansion of (1-x^5) / (1-x)^5.at n=10A008487
- Multiples of 25.at n=35A008607
- Expansion of (1+2*x^3+x^5)/((1-x)^2*(1-x^5)).at n=46A008823
- Triangle of coefficients from fractional iteration of e^x - 1.at n=16A008826
- Number of proper partitions of a set of n labeled elements.at n=5A008827
- Partial sums of primes, if 1 is regarded as a prime (as it was until quite recently, see A008578).at n=23A014284
- Differences between two positive cubes in exactly 1 way.at n=47A014439
- Numbers k that divide s(k), where s(1)=1, s(j)=21*s(j-1)+j.at n=16A014872
- Expansion of 1/(1 - x^14 - x^15 - ...).at n=68A017908
- Divisors of 875.at n=7A018697