Properties of the Number 16981

Sixteen Thousand Nine Hundred Eighty-One

Basics

Value: 16980 → 16981 → 16982

Parity: odd

Prime: Yes

Previous Prime: 16979

Next Prime: 16987

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 16981

Divisors: 1, 16981

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100001001010101

Octal: 41125

Duodecimal: 99B1

Hexadecimal: 4255

Square: 288354361

Square Root: 130.31116606031887

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

Triangle of coefficients of (1 - x)ⁿ*B_n(x/(1 - x)), where B_n(x) is the n-th Bell polynomial. A122753

Primes of the form n² + 81. A256775

Column 6 of array illustrated in A089574 and related to A034261. A107601

Primes p such that A001175(p) = (p-1)/6. A308791

Primes p such that A001177(p) = (p-1)/6. A308799

Primes p such that the sum of the digits of p is not prime, but the sum of the cubes of the digits of p is prime. A91365

Primes of the form 256 k + 85. A127593

Primes that remain prime through 3 iterations of function f(x) = 5x + 8. A23286

P(p(n)), P = primes (A000040), p = partition numbers (A000041). A58697

Primes p such that p-2 and q are primes, where q is concatenation of binary representations of p and p-2: q = p·2^L + p-2, where L is the length of binary representation of p-2: L=A070939(p-2). A232237