15527
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 20
- Digital Root
- 2
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 2
- Divisor Sum
- 15528
- Proper Divisor Sum (Aliquot Sum)
- 1
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 15526
- Möbius Function
- -1
- Radical
- 15527
- 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
- 115
- 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
- 1812
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- no
- Odd
- yes
Appears in sequences
- Primes that remain prime through 3 iterations of function f(x) = 5x + 6.at n=40A023285
- Number of dyslexic rooted compound windmills with n nodes where any 2 submills extending from the same node are different.at n=15A032235
- Least prime in A031932 (lesser of 14-twins) whose distance to the next 14-twin is 6*n.at n=38A052356
- Second term of strong prime 5-tuples: p(m)-p(m-1) > p(m+1)-p(m) > p(m+2)-p(m+1) > p(m+3)-p(m+2).at n=35A054809
- Integers k > 10577 such that the 'Reverse and Add!' trajectory of k joins the trajectory of 10577.at n=4A063434
- Primes expressible as the sum of (at least two) consecutive primes in at least 3 ways.at n=29A067379
- Smallest prime equal to the sum of 2n+1 consecutive primes.at n=39A070934
- Smallest odd prime that is the sum of 2n+1 consecutive primes.at n=39A082244
- Smallest prime that is the sum of prime(n) consecutive primes.at n=21A082277
- Numbers k such that 7*11^k + 2 is prime.at n=18A083366
- Numbers of partitions of 2n into n primes.at n=42A102108
- Prime numbers k such that k^2 +- (k+1) are primes.at n=38A137460
- Primes congruent to 17 mod 47.at n=38A142368
- Primes congruent to 51 mod 53.at n=34A142581
- Primes congruent to 10 mod 59.at n=32A142737
- Primes congruent to 33 mod 61.at n=31A142831
- Number of 0..n arrays of length 3 with 0 never adjacent to n.at n=23A212836
- Primes with the property that the sum of the cubes of their digits plus the prime equals another prime squared.at n=3A228195
- Primes p which are floor of Root-mean-cube (RMC) of prime(n), prime(n+1) and prime(n+2).at n=10A239941
- Number of non-isomorphic set multipartitions of weight n in which all parts have the same size.at n=18A306018