Properties of the Number 90073

Ninety Thousand Seventy-Three

Basics

Value: 90072 → 90073 → 90074

Parity: odd

Prime: Yes

Previous Prime: 90071

Next Prime: 90089

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 90073

Divisors: 1, 90073

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10101111111011001

Octal: 257731

Duodecimal: 44161

Hexadecimal: 15fd9

Square: 8113145329

Square Root: 300.12164200537086

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

G.f. A(x) satisfies: A(x) = 1 + x·A(x/(1 - x)⁴) / (1 - x)⁴. A351817

Numerators of the partial sums of the reciprocals of the sum of bi-unitary divisors function (A188999). A379615

Primes containing the digit string "007" in their decimal representation. A386240

Penta-Primes. Prime Numbers n as a Sum of 5 consecutive prime numbers (four twin primes and single prime number in between) are primes. A138397

Primes p which can be written as p = (A060735(k) +- next largest prime factor not in A060735(k)) for some k. A378018

Number of unlabeled rooted trees with n nodes (or connected functions with a fixed point). A81

Number of trees with n unlabeled nodes. A55

Number of forests with n unlabeled nodes. A5195

a(n) = 7·a(n-1) - a(n-2) + 4, with a(0) = 0, a(1) = 5. A3482

a(n) = max{ C(n,0), C(n-1,1), C(n-2,2), ..., C(n-n,n) }. A73028