Properties of the Number 2516

Two Thousand Five Hundred Sixteen

Basics

Value: 2515 → 2516 → 2517

Parity: even

Prime: No

Previous Prime: 2503

Next Prime: 2521

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 2 ² × 17 × 37

Divisors: 1, 2, 4, 17, 34, 37, 68, 74, 148, 629

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 100111010100

Octal: 4724

Duodecimal: 1558

Hexadecimal: 9d4

Square: 6330256

Square Root: 50.15974481593781

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

Number of knapsack partitions of n. A108917

Number of Motzkin paths of length n with no level steps at odd level. A90344

In base-10 notation replace digits of n with their squared values (Version 1). A48385

a(n) = 2·n*(n+3). A139570

a(n) = binomial(n,4) + binomial(n,2). A55795

T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every element next to itself plus and minus one within the range 0..2 horizontally, diagonally or antidiagonally, with no adjacent elements equal. A232515

Triangle read by rows: T(n,m) (n >= m >= 1) = number of chambers (or regions) formed by drawing the line segments connecting any two of the (n+1) X (m+1) lattice points in an n X m lattice polygon. A288187

a(1)=1, a(2)=2, for n > 2 if a(n-1) is prime, then a(n) = 2·a(n-1), otherwise a(n) = a(n-1) - 1. A116533

Number of n-digit numbers in a cycle (including fixed points) under the Kaprekar map A151949. A164732

a(n) is the smallest value of m such that A002378(m), the m-th oblong number, contains exactly n 7's. A48543