Properties of the Number 90001

Ninety Thousand One

Basics

Value: 90000 → 90001 → 90002

Parity: odd

Prime: Yes

Previous Prime: 89989

Next Prime: 90007

Digit Sum: 10

Digital Root: 1

Palindrome: No

Factorization: 90001

Divisors: 1, 90001

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10101111110010001

Octal: 257621

Duodecimal: 44101

Hexadecimal: 15f91

Square: 8100180001

Square Root: 300.00166666203705

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

Primes having only {0, 1, 9} as digits. A199329

Naughty primes: primes in which the number of zeros is greater than the number of all other digits. A164968

Primes p such that A001175(p) = (p-1)/8. A308793

Central coefficients of number triangle A113582. A154323

A239459(n) / n. A239462

Middle of 3 consecutive prime numbers such that p1·p2·p3 + d1 + d2 - 1 = average of twin prime pairs, d1 (δ) = p2 - p1, d2 (δ) = p3 - p2. A153404

Smallest prime in which the n-th significant digit is a 9. A69593

Number of n X 3 binary arrays with all 1s connected, all corners 1, and no 1 having more than two 1s adjacent. A163734

The quintuples (d1,d2,d3,d4,d5) with elements in {2,4,6} are listed in lexicographic order; for each quintuple, this sequence lists the smallest prime p >= 7 such that the differences between the 6 consecutive primes starting with p are (d1,d2,d3,d4,d5), if such a prime exists. A78872

First n-digit number that occurs in the sequence A085951. A85952