6151
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
- 2
- Divisor Sum
- 6152
- 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
- 6150
- Möbius Function
- -1
- Radical
- 6151
- 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
- 111
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- yes
- Composite Number
- no
- Semiprime
- no
- Squarefree Number
- yes
- Prime Power
- yes
- Prime Factorization
- no
- Twin Prime
- no
- Mersenne Prime
- no
- Sophie Germain Prime
- no
- Safe Prime
- no
- Powerful Number
- no
- Achilles Number
- no
- Prime Index
- 802
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- no
- Odd
- yes
Appears in sequences
- Primes p such that the multiplicative order of 2 modulo p is (p-1)/6.at n=41A001136
- Numbers that are the sum of 10 positive 11th powers.at n=3A004821
- Numbers that are the sum of at most 10 positive 11th powers.at n=37A004916
- Numbers that are the sum of at most 11 positive 11th powers.at n=40A004917
- Odd primes such that (3p+1)/2 and 3p+4 are also prime.at n=38A014223
- 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 77.at n=15A031575
- Primes with first digit 6.at n=36A045712
- Primes whose consecutive digits differ by 4 or 5.at n=20A048416
- Numbers k such that 181*2^k-1 is prime.at n=36A050842
- Automorphic primes: p such that p^p ends with the digits of p.at n=43A052228
- Primes p whose period of reciprocal equals (p-1)/6.at n=38A056211
- Primes p such that x^41 = 2 has no solution mod p.at n=20A059236
- Numbers n such that n divides the (left) concatenation of all numbers <= n written in base 14 (most significant digit on right).at n=9A061967
- Final terms of rows of A077321.at n=24A077323
- Primes p = prime(n) such that p + sum-of-digits(p) +- 1 = prime(n+1).at n=32A090180
- Primes which are also prime if their base 32 representation is interpreted as a base 10 number.at n=36A090716
- Primes whose representation in base 1024 can be interpreted as a decimal prime.at n=8A090721
- Numbers k such that numerator of Sum_{i=1..k} 1/(prime(i)-1) is prime.at n=53A092063
- Prime numbers in A092063.at n=10A092064
- Smallest prime equal to the sum of exactly 2n+1 distinct odd primes in at least n ways.at n=26A100697