Properties of the Number 27997

Twenty-Seven Thousand Nine Hundred Ninety-Seven

Basics

Value: 27996 → 27997 → 27998

Parity: odd

Prime: Yes

Previous Prime: 27983

Next Prime: 28001

Digit Sum: 34

Digital Root: 7

Palindrome: No

Factorization: 27997

Divisors: 1, 27997

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110110101011101

Octal: 66535

Duodecimal: 14251

Hexadecimal: 6d5d

Square: 783832009

Square Root: 167.32304085211933

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

Smaller member of a pair (p,q) of cousin primes such that p and q are in different centuries. A160440

Primes having only {2, 7, 9} as digits. A261182

Smallest number requiring n 1's to build using +, * and -. A255641

Prime numbers p such that π(p) + 2·p is a square. A104783

Primes with digit sum = 34. A106769

Primes related to the nondecreasing subsequence of A053666. A69802

Numbers k such that in base 2 the k-th composite is a substring of the k-th prime. A378479

Numbers k such that 219·2^k+1 is prime. A32486

Primes of the form ∑_k=1..n φ(prime(k)). A101302

Number of subwords of type dh^ju (j>=1), where u=(1,1), h=(1,0), and d=(1,-1), in all peakless Motzkin paths of length n (can be easily expressed using RNA secondary structure terminology). A190163