Properties of the Number 51787

Fifty-One Thousand Seven Hundred Eighty-Seven

Basics

Value: 51786 → 51787 → 51788

Parity: odd

Prime: Yes

Previous Prime: 51769

Next Prime: 51797

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 51787

Divisors: 1, 51787

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1100101001001011

Octal: 145113

Duodecimal: 25B77

Hexadecimal: ca4b

Square: 2681893369

Square Root: 227.56757238235855

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

Main diagonal of array A255551. A255550

a(n) is the smallest number that cannot be obtained from the numbers {2⁰,2¹,...,2ⁿ} using each number at most once and the operators +, -, *, /. Parentheses are allowed, intermediate fractions are not allowed. A71314

Primes of the form 13·n²+3·n+1. A176783

Number of 0..n arrays x(0..4) of 5 elements with nondecreasing average value. A200765

Beginning with 11, least prime such that concatenation of first n terms and its digit reversal both are primes. A380227

Primes p = p(k) such that p(k) + p(k+9) = p(k+1) + p(k+8) = p(k+2) + p(k+7) = p(k+3) + p(k+6) = p(k+4) + p(k+5). A64103

Expected number of spins in a 2-player Dreidel game (rounded to nearest integer) (version 1). A51787

Primes p that have at least four primitive roots that are not primitive roots mod p². A60520