Properties of the Number 51142

Fifty-One Thousand One Hundred Forty-Two

Basics

Value: 51141 → 51142 → 51143

Parity: even

Prime: No

Previous Prime: 51137

Next Prime: 51151

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 2 × 7 × 13 × 281

Divisors: 1, 2, 7, 13, 14, 26, 91, 182, 281, 562

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1100011111000110

Octal: 143706

Duodecimal: 2571A

Hexadecimal: c7c6

Square: 2615504164

Square Root: 226.1459705588406

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 T(n,k) of length 2n k-ary words, either empty or beginning with the first letter of the alphabet and using each letter at least once, that can be built by repeatedly inserting doublets into the initially empty word; triangle T(n,k), n>=0, 0<=k<=n, read by rows. A256116

Numbers k such that 225·2^k+1 is prime. A32489

a(n) is the number of digits in the decimal representation of the smallest power of 3 that contains n consecutive identical digits. A217186

Numbers k with the property that there exists a positive integer multiplier M such that M times the sum of the digits of k, multiplied further by the reversal of this product, gives k. A305131

Triangle read by rows: T(n, m) = S1(n, m)*4^n-m, where S1 are the signed Stirling numbers of first kind A008275 (n >= 1, 1 <= m <= n). A51142

Number of nX2 0..3 arrays with row sums unimodal and column sums inverted unimodal. A223660