153
domain: N
Properties
Digital Properties
- Digit Count
- 3
- Digit Sum
- 9
- Digital Root
- 9
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 6
- Divisor Sum
- 234
- Proper Divisor Sum (Aliquot Sum)
- 81
- 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
- 96
- Möbius Function
- 0
- Radical
- 51
- Omega Function (Ω)
- 3
- 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
- yes
- Perfect Square
- no
- Perfect Cube
- no
- Pentagonal Number
- no
- Hexagonal Number
- yes
- Lucas Number
- no
- Tetrahedral Number
- no
- Pell Number
- no
- Tribonacci Number
- no
- Pronic Number
- no
Recreational
- Happy Number
- no
- Harshad Number
- yes
- Narcissistic Number
- yes
- Collatz Steps
- 36
- 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
- einshundertdreiundfünfzig· ordinal: einshundertdreiundfünfzigste
- English
- one hundred fifty-three· ordinal: one hundred fifty-third
- Spanish
- ciento cincuenta y tres· ordinal: 153º
- French
- cent cinquante-trois· ordinal: cent cinquante-troisième
- Italian
- centocinquantatre· ordinal: 153º
- Latin
- centum quinquaginta tres· ordinal: 153.
- Portuguese
- cento e cinquenta e três· ordinal: 153º
Appears in sequences
- Positive zeros of Bessel function of order 0 rounded to nearest integer.at n=48A000134
- Hexagonal numbers: a(n) = n*(2*n-1).at n=9A000384
- Numbers that are the sum of 2 nonzero squares.at n=52A000404
- Numbers that are the sum of 2 but no fewer nonzero squares.at n=50A000415
- Number of ethylene derivatives with n carbon atoms.at n=7A000631
- Number of compositions of n into 3 ordered relatively prime parts.at n=18A000741
- Numbers that are not the sum of 4 tetrahedral numbers.at n=10A000797
- Number of switching networks (see Harrison reference for precise definition).at n=2A000835
- n! never ends in this many 0's.at n=28A000966
- Dimensions (sorted, with duplicates removed) of real simple Lie algebras.at n=39A001066
- Moran numbers: k such that k/(sum of digits of k) is prime.at n=12A001101
- A self-generating sequence: a(1)=1, a(2)=2, a(n+1) chosen so that a(n+1)-a(n-1) is the first number not obtainable as a(j)-a(i) for 1<=i<j<=n.at n=16A001149
- Triangle read by rows, in which row n consists of n(n+m) for m = 1 .. n-1.at n=35A001283
- Numbers of form m*k with m+1 <= k <= 2m-1.at n=41A001284
- Numbers that are the sum of 2 squares.at n=63A001481
- Nearest integer to 2*n*log(n).at n=24A001618
- Numbers whose digits contain no loops (version 2).at n=47A001742
- a(n) = 4*a(n-1) - a(n-2), with a(0) = 1, a(1) = 1.at n=5A001835
- Sorting numbers: maximal number of comparisons for sorting n elements by binary insertion.at n=35A001855
- a(1)=2, a(2)=3; for n >= 3, a(n) is smallest number that is uniquely of the form a(j) + a(k) with 1 <= j < k < n.at n=34A001857