Properties of the Number 56865

Fifty-Six Thousand Eight Hundred Sixty-Five

Basics

Value: 56864 → 56865 → 56866

Parity: odd

Prime: No

Previous Prime: 56857

Next Prime: 56873

Digit Sum: 30

Digital Root: 3

Palindrome: Yes

Factorization: 3 × 5 × 17 × 223

Divisors: 1, 3, 5, 15, 17, 51, 85, 223, 255, 669

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

5184 Try Today's Challenge

Representations

Binary: 1101111000100001

Octal: 157041

Duodecimal: 28AA9

Hexadecimal: de21

Square: 3233628225

Square Root: 238.46383373585186

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Odd numbers n for which A318879(n) is not zero and A318879(n) divides A318878(n); odd numbers such that A326140(n) = A318879(n). A326141

Numbers m for which abs(A045763(m) - A073757(m)) = 3, i.e., signed difference of size of related and unrelated sets to n equals either 3 or -3. A83250

Palindromes with exactly 4 distinct prime factors. A46394

Numbers k such that k and k² use only the digits 2, 3, 5, 6 and 8. A137081

Numbers n such that d(n) = φ(n+1) - φ(n), where d(n) denotes the number of divisors of n. A66171

a(n) = floor(n²/10). A56865

One-half the number of permutations of length n with exactly 4 rising or falling successions. A1268