Properties of the Number 227

Two Hundred Twenty-Seven

Basics

Value: 226 → 227 → 228

Parity: odd

Prime: Yes

Previous Prime: 223

Next Prime: 229

Digit Sum: 11

Digital Root: 2

Palindrome: No

Factorization: 227

Divisors: 1, 227

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11100011

Octal: 343

Duodecimal: 16B

Hexadecimal: e3

Square: 51529

Square Root: 15.066519173319364

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

The prime numbers. A40

Powers of primes. Alternatively, 1 and the prime powers (p^k, p prime, k >= 1). A961

Lesser of twin primes. A1359

Prime numbers at the beginning of the 20th century (today 1 is no longer regarded as a prime). A8578

Numbers k such that (7·10^k + 71)/3 is prime. A270831

Primes of the form 4·k + 3. A2145

Odd primes. A65091

a(n) = ∑_k=1..n floor(n/k); also ∑_k=1..n d(k), where d = number of divisors (A000005); also number of solutions to x·y = z with 1 <= x,y,z <= n. A6218

Twin primes. A1097

"Fermi-Dirac primes": numbers of the form p^{2^k} where p is prime and k >= 0. A50376

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