Properties of the Number -2154

One Hundred Fifty-Four

Basics

Value: -2155 → -2154 → -2153

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 359

Divisors: 1, 2, 3, 6, 359, 718, 1077, 2154

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100001101010

Octal: -4152

Duodecimal: -12B6

Hexadecimal: -86a

Square: 4639716

Square Root: 46.411205543489174

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

Expansion of (1 + x)/(1 + x + 3·x²). A110523

Expansion of ∏_k>=1 ((1 + x)^k + x^k)/((1 + x)^k - x^k). A307521

Expansion of e.g.f. exp(arctan(x)/exp(x)). A13571

G.f.: 1 + 1·x/(1 + 2·x²/(1 + 3·x³/(1 + 4·x⁴/(1 + 5·x⁵/(1 + ...))))). A343468

Discriminants of real quadratic fields with class number 2 and related continued fraction period length of 24. A51989

Powers of cube root of 10 rounded to nearest integer. A18004

Powers of cube root of 10 rounded down. A18003

Number of ordered pairs (i,j), 0 <= i,j < n, for which (i & j) is nonzero, where & is the bitwise AND operator. A80572

Number T(n,k) of equivalence classes of ways of placing k 2 X 2 tiles in an n X n square under all symmetry operations of the square; irregular triangle T(n,k), n>=2, 0<=k<=floor(n/2)², read by rows. A236679

Largest number whose cube has n digits. A61439