Properties of the Number 74257

Seventy-Four Thousand Two Hundred Fifty-Seven

Basics

Value: 74256 → 74257 → 74258

Parity: odd

Prime: Yes

Previous Prime: 74231

Next Prime: 74279

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 74257

Divisors: 1, 74257

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10010001000010001

Octal: 221021

Duodecimal: 36B81

Hexadecimal: 12211

Square: 5514102049

Square Root: 272.5013761433142

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

Noncomposite numbers in the southwestern ray of the Ulam spiral as oriented on the March 1964 cover of Scientific American. A168026

Second term p(m) of strong prime sextets: p(m)-p(m-1) > p(m+1)-p(m) > p(m+2)-p(m+1) > p(m+3)-p(m+2) > p(m+4)-p(m+3). A54814

Sixth term of weak prime sextet: p(m-4)-p(m-5) < p(m-3)-p(m-4) < p(m-2)-p(m-3) < p(m-1)-p(m-2) < p(m)-p(m-1). A54833

E.g.f. satisfies: A(x) = exp(x·A(sin(x²))). A141626

Primes the squares of which are Fibbinary numbers (A003714). A144759

Variant of Sylvester's sequence: a(n + 1) = a(n)² - a(n) + 1, with a(1) = 17. A179093

Primes of the form 7n² - 6. A201852

Maximal prime written in decimal among the base-k representations of the n-th prime, read in base 16, for k=2,3,...,16. A253549

Prime numbers of the form k*(k+1) + (k*(k+1))² + 1. A255314

Prime numbers p for which none of its digits appear in the decimal expansion of p/π(p). A117272