227
domain: N
Properties
Digital Properties
- Digit Count
- 3
- Digit Sum
- 11
- Digital Root
- 2
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 2
- Divisor Sum
- 228
- Proper Divisor Sum (Aliquot Sum)
- 1
- 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
- 226
- Möbius Function
- -1
- Radical
- 227
- Omega Function (Ω)
- 1
- Little Omega Function (ω)
- 1
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
- 13
- Smith Number
- no
Primality
- Prime
- yes
- Composite Number
- no
- Semiprime
- no
- Squarefree Number
- yes
- Prime Power
- yes
- Prime Factorization
- no
- Twin Prime
- yes
- Mersenne Prime
- no
- Sophie Germain Prime
- no
- Safe Prime
- yes
- Powerful Number
- no
- Achilles Number
- no
- Prime Index
- 49
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- no
- Odd
- yes
Names
- German
- zweihundertsiebenundzwanzig· ordinal: zweihundertsiebenundzwanzigste
- English
- two hundred twenty-seven· ordinal: two hundred twenty-seventh
- Spanish
- doscientos veintisiete· ordinal: 227º
- French
- deux cent vingt-sept· ordinal: deux cent vingt-septième
- Italian
- duecentoventisette· ordinal: 227º
- Latin
- ducenti viginti septem· ordinal: 227.
- Portuguese
- duzentos e vinte e sete· ordinal: 227º
Appears in sequences
- Primes that divide at least one term in every Fibonacci sequence.at n=12A000057
- Number of partitions of n if there are two kinds of 1, two kinds of 2 and two kinds of 3.at n=9A000098
- Numbers that are not the sum of 4 tetrahedral numbers.at n=14A000797
- Number of twin prime pairs < square of n-th prime.at n=27A000885
- Powers of primes. Alternatively, 1 and the prime powers (p^k, p prime, k >= 1).at n=63A000961
- From a differential equation.at n=6A000998
- Union of all numbers {p, q} where p and q are both primes or powers of primes and q = p+2.at n=45A001092
- Twin primes.at n=29A001097
- Primes with primitive root 2.at n=23A001122
- Lesser of twin primes.at n=15A001359
- Numbers k such that phi(k+2) = phi(k) + 2.at n=26A001838
- Related to Zarankiewicz's problem.at n=19A001841
- a(n) = n*a(n-1) + (n-5)*a(n-2).at n=4A001910
- Cyclic numbers: 10 is a quadratic residue modulo p and class of mantissa is 2.at n=15A001914
- Primes p such that the congruence 2^x == 3 (mod p) is solvable.at n=30A001915
- Primes p such that the congruence 2^x = 5 (mod p) is solvable.at n=28A001916
- v-pile counts for the 4-Wythoff game with i=2.at n=43A001966
- Number of partitions of 3n into n parts from the set {0, 1, ..., 6} (repetitions admissible).at n=9A001977
- Number of partitions of 3n-1 into n nonnegative integers each no more than 6.at n=9A001978
- Prime determinants of forms with class number 2.at n=24A002052