Properties of the Number 2756

Two Thousand Seven Hundred Fifty-Six

Basics

Value: 2755 → 2756 → 2757

Parity: even

Prime: No

Previous Prime: 2753

Next Prime: 2767

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 ² × 13 × 53

Divisors: 1, 2, 4, 13, 26, 52, 53, 106, 212, 689

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 101011000100

Octal: 5304

Duodecimal: 1718

Hexadecimal: ac4

Square: 7595536

Square Root: 52.49761899362675

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) = 2·n*(2·n+1). A2943

Product of a prime and the previous number. A36689

a(n) = ∑_{k=1..n, gcd(n,k) = 1} k². A53818

Numbers k such that k² divides 5^k-1. A127105

Number T(n,k) of equivalence classes of ways of placing k 3 X 3 tiles in an n X 10 rectangle under all symmetry operations of the rectangle; irregular triangle T(n,k), n>=3, 0<=k<=3·floor(n/3), read by rows. A238592

Expansion of 1/((1-x)²*(1-x²)*(1-x⁴)). A8804

Numbers n such that 8ⁿ+7^n-1 is prime. A93794

a(n) = period of the sequence {m^m, m >= 1} modulo n. A174824

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

Numbers m such that there are precisely 20 groups of order m. A298911