Properties of the Number 45257

Forty-Five Thousand Two Hundred Fifty-Seven

Basics

Value: 45256 → 45257 → 45258

Parity: odd

Prime: No

Previous Prime: 45247

Next Prime: 45259

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 167 × 271

Divisors: 1, 167, 271, 45257

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1011000011001001

Octal: 130311

Duodecimal: 22235

Hexadecimal: b0c9

Square: 2048196049

Square Root: 212.7369267428671

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

Golden semiprimes: a(n)=p·q and abs(p*φ-q)<1, where φ = golden ratio = (1+sqrt(5))/2. A108540

Triangle read by rows: T(n,k) is the number of skew Dyck paths of semilength n having k DD's (0 <= k <= n-1 for n >= 1). A128738

Multiplicity of highest weight (or singular) vectors associated with character chi₉₂ of Monster module. A34480

Numbers whose base-5 representation contains exactly two 1's and two 4's. A45257

a(0) = 0; for n > 0, if the value of n itself appears in the sequence then a(n) = a(n-1) - (n-index(n)) if nonnegative and not already in the sequence, otherwise a(n) = a(n-1) + (n-index(n)), where index(n) is the index of the last appearance of n. If the value of n does not appear then a(n) = a(n-1) - n if nonnegative and not already in the sequence, otherwise a(n) = a(n-1) + n. A340733