Properties of the Number -155809

One Hundred Fifty-Five Thousand Eight Hundred Nine

Basics

Value: -155810 → -155809 → -155808

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 155809

Divisors: 1, 155809

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100110000010100001

Octal: -460241

Duodecimal: -76201

Hexadecimal: -260a1

Square: 24276444481

Square Root: 394.7264875834912

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

a(n) is the first prime index where the gap between R(n), Riemann's prime counting function, and π(n), the exact prime counting function, is greater than n. A226473

Smallest n such that π(n)=Floor[n/log((n-π(n))/e)]. A135325