Properties of the Number -17951

Seventeen Thousand Nine Hundred Fifty-One

Basics

Value: -17952 → -17951 → -17950

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 29 × 619

Divisors: 1, 29, 619, 17951

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100011000011111

Octal: -43037

Duodecimal: -A47B

Hexadecimal: -461f

Square: 322238401

Square Root: 133.98134198462114

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

Triangle read by rows, defined by Riordan's general Eulerian recursion: T(n, k) = (k+3)*T(n-1, k) + (n-k-2) * T(n-1, k-1) with T(n,1) = 1, T(n,n) = (-2)^n-1. A306547

Composite numbers whose divisors (except 1) all contain the digit 9. A62680

A positive integer n is included if n, when written in binary, is made of run-lengths (lengths of runs of 0's as well as of runs of 1's) that form a permutation of some number of consecutive positive integers starting with 1. A175061

a(0)=1, a(1)=1, a(n) = 11·a(n/2) for even n, and a(n) = 10·a((n-1)/2) + a((n+1)/2) for odd n >= 3. A116525

The Wiener index of a chain of n triangles (i.e., joined like VVV..VV; here V is a triangle!). A143941

a(n) = n*(n² - 1)/2 - 1. A117560

Numbers n with nonzero digits such that n*(product of digits of n) is a palindrome. A229550

Indices of the start of 10 successive distinct digits in the decimal expansion of e (2.718281828...). A258166

Numbers k such that σ(k) - φ(k) is a 4th power. A115918

Numbers that can be written in more than 1 way as p² + 3pq + q² with primes p < q. A218795