Properties of the Number 6215

Six Thousand Two Hundred Fifteen

Basics

Value: 6214 → 6215 → 6216

Parity: odd

Prime: No

Previous Prime: 6211

Next Prime: 6217

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 5 × 11 × 113

Divisors: 1, 5, 11, 55, 113, 565, 1243, 6215

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1100001000111

Octal: 14107

Duodecimal: 371B

Hexadecimal: 1847

Square: 38626225

Square Root: 78.835271294009

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

D-toothpick sequence of the third kind starting with a single toothpick. A220500

Triangle read by rows: row n lists number of ordered partitions into k parts of partitions of n. A60642

Number of pairwise coprime strict compositions of n, where a singleton is always considered coprime. A337562

Numbers n such that every digit occurs at least once in n³. A119735

Total number of parts in all partitions of n into prime parts. A84993

T(n,k) = Number of n X k 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 2, 3 or 5 neighboring 1's. A297802

Expansion of (-1 + ∏_k>=1 1 / (1 - x^k))⁵. A341223

a(n) = floor(7ⁿ / 2ⁿ) mod 2ⁿ. A211995

Composite integers m such that P(m)² == 1 (mod m), where P(m) is the m-th Pell number A000129(m). Also, odd composite integers m such that U(m)² == 1 (mod m) and V(m) == 6 (mod m), where U(m)=A001109(m) and V(m)=A003499(m) are the m-th generalized Lucas and Pell-Lucas numbers of parameters a=6 and b=1, respectively. A337233

Pell pseudoprimes: odd composite numbers n such that P(n)-Kronecker(2,n) is divisible by n. A99011