7955
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 26
- Digital Root
- 8
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 5
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 10032
- Proper Divisor Sum (Aliquot Sum)
- 2077
- 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
- 6048
- Möbius Function
- -1
- Radical
- 7955
- Omega Function (Ω)
- 3
- Little Omega Function (ω)
- 3
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
- 145
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- 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
- Convolution of composite numbers and odd numbers.at n=22A023650
- Numbers having period-2 6-digitized sequences.at n=26A031357
- Base-7 palindromes that start with 3.at n=31A043017
- a(n) = 2*(F(1)^3+F(2)^3+F(3)^3+...+F(p)^3)/(F(1)+F(2)+F(3)+...+F(p)) where p is the n-th prime and F(k) denotes the k-th Fibonacci number.at n=4A079716
- Floor of area of triangle with consecutive prime sides.at n=31A096377
- Indices of squares (of primes) in the semiprimes.at n=40A128301
- A sequence of triples of squarefree consecutive integers each composed of exactly three primes.at n=41A165936
- Inverse permutation to A190126.at n=13A190127
- Number of days after Mar 01 00 such that the date written the format MMDDYY (American standard, short) is palindromic.at n=8A210894
- Numbers n such that a new circle appears in the structure of A211000.at n=42A211021
- Number of partitions of n+8 with largest inscribed rectangle having area <= n.at n=24A218629
- Numbers that end in (..., 175, 175, 175, ...) under the rule: next term = product of the last four digits in the sequence so far.at n=45A239721
- Number of partitions of n such that the multiplicity of the greatest part is a part.at n=33A240494
- Number of length n+4+1 0..4 arrays with every value 0..4 appearing at least once in every consecutive 4+2 elements, and new values 0..4 introduced in order.at n=9A242235
- Palindromic in bases 7 and 29.at n=14A249158
- Numbers m with the property that its k-th smallest divisor, for all 1 <= k <= tau(m), contains exactly k "1" digits in its binary representation.at n=16A255401
- Expansion of exp( Sum_{n >= 1} A002438(n)*x^n/n ).at n=3A255884
- Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 606", based on the 5-celled von Neumann neighborhood.at n=26A273206
- Sum of 4th powers of proper divisors of n.at n=17A279363
- Numbers k such that (49*10^k - 139)/9 is prime.at n=16A295972