Properties of the Number 2921

Two Thousand Nine Hundred Twenty-One

Basics

Value: 2920 → 2921 → 2922

Parity: odd

Prime: No

Previous Prime: 2917

Next Prime: 2927

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 23 × 127

Divisors: 1, 23, 127, 2921

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 101101101001

Octal: 5551

Duodecimal: 1835

Hexadecimal: b69

Square: 8532241

Square Root: 54.04627646748664

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

Numbers that are the sum of 9 positive 6th powers. A3365

Number of distinct products i·j*k with 1 <= i < j < k <= n. A27430

Number of permutations of [n] having at least one succession. A succession of a permutation p is a position i such that p(i+1)-p(i) = 1. A180191

Composite and every divisor (except for 1) contains the digit 2. A62664

Number T(n,k) of occurrences of k in a (signed) displacement set of a permutation of [n] divided by |k|!; triangle T(n,k), n>=1, 1-n<=k<=n-1, read by rows. A306234

Number of integer partitions of n with a unique prime part. A379304

Ziggurat sequence (see Comments lines for definition). A347186

a(n) = 2·n² + n - 5. A100040

Total number of occurrences of k in the (signed) displacement sets of all permutations of [n+k] divided by k!; square array A(n,k), n>=0, k>=0, read by antidiagonals. A324362

Triangle read by rows in which row n lists n+1 terms, starting with n, such that the difference between successive terms is equal to n³ - 1. A162614