Properties of the Number 2154

Two Thousand One Hundred Fifty-Four

Basics

Value: 2153 → 2154 → 2155

Parity: even

Prime: No

Previous Prime: 2153

Next Prime: 2161

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

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

a(n) = n XOR n². A169810

Number of compositions of n with all adjacent parts (x, y) satisfying x < 2y and y <= 2x. A342338

Solutions to σ(x) - 2x <= x^1/3, both even and odd. Abundance-radius = abs(σ(n)-2n) does not exceed 3rd root of n. A88008

List of distinct numbers appearing as denominators of Bernoulli numbers. A90801