Properties of the Number 52981

Fifty-Two Thousand Nine Hundred Eighty-One

Basics

Value: 52980 → 52981 → 52982

Parity: odd

Prime: Yes

Previous Prime: 52973

Next Prime: 52999

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 52981

Divisors: 1, 52981

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1100111011110101

Octal: 147365

Duodecimal: 267B1

Hexadecimal: cef5

Square: 2806986361

Square Root: 230.17601960239037

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

Primes of the form n² + 81. A256775

Number T(n,k) of colored compositions of n using all colors of a k-set such that all parts have different color patterns and the patterns for parts i are sorted and have i colors in (weakly) increasing order; triangle T(n,k), n>=0, 0<=k<=n, read by rows. A327244

Primes of the form 7n² - 2. A201848

Number of (n+1) X (6+1) 0..1 arrays with every 2 X 2 subblock antidiagonal maximum minus diagonal minimum nondecreasing horizontally and diagonal maximum minus antidiagonal minimum nondecreasing vertically. A253395

Numerator of [xⁿ] in the Taylor series arccosh(exp(x)-arctanh(x))= x-x²/6-x³/72 -359·x⁴/2160 -1681·x⁵/51840 -52981·x⁶/435456 -... A13325

Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 51. A31639

Primes p such that 65535·p is not of the form q + 2^a + 2^b with a, b > 0 and q prime. A332100

Odd numbers that are not of the form p + 2^a + 2^b, a, b > 0, p prime. A156695

Expansion of ( 1-x ) / ( 1-4·x-3·x²+3·x³ ). A52981