5371
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 16
- Digital Root
- 7
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 5544
- Proper Divisor Sum (Aliquot Sum)
- 173
- 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
- 5200
- Möbius Function
- 1
- Radical
- 5371
- 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
- 129
- 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 n such that 54*10^n + 1 is prime.at n=10A004203
- Pseudoprimes to base 42.at n=17A020170
- Pseudoprimes to base 78.at n=21A020206
- Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 73.at n=4A031571
- a(n) = T(6,n), array T given by A047858.at n=9A048467
- Semiprimes p1*p2 such that p2 > p1 and p2 mod p1 = 8.at n=27A064906
- Composite numbers with all divisors congruent to 1 mod 10.at n=38A068872
- Denominator of the n-th convergent to Sum_{k>=0} 1/2^(2^k).at n=7A073415
- Least multiple of n == 1 (mod prime(n)).at n=40A090938
- Number of 4k+3 primes (A002145) in range ]2^n,2^(n+1)].at n=16A095008
- Numbers n such that pi(n)=pi(d_1!)+pi(d_2!)+...+pi(d_k!) where d_1 d_2 ...d_k is the decimal expansion of n.at n=6A105327
- Numbers k such that k and 8*k, taken together, are zeroless pandigital.at n=7A115932
- a(2*n+1) = 5*a(n), a(2*n+2) = 6*a(n) + a(n-1).at n=34A116553
- Lucky numbers for which the product of the digits is also a lucky number.at n=42A118556
- No sum of 2 or more terms equals a prime.at n=6A133660
- Number of n X n symmetric binary matrices containing no more than one 1 in any 3 X 3 sub-block.at n=9A139009
- a(n) = n*(3*n + 8).at n=41A140677
- Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 11000-01110-00011 pattern in any orientation.at n=10A147192
- Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 0, 0), (-1, 0, 1), (0, 1, -1), (1, 0, 0)}.at n=9A148560
- Partial sums of Proth primes A080076.at n=16A172243