Properties of the Number 85285

Eighty-Five Thousand Two Hundred Eighty-Five

Basics

Value: 85284 → 85285 → 85286

Parity: odd

Prime: No

Previous Prime: 85259

Next Prime: 85297

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 5 × 37 × 461

Divisors: 1, 5, 37, 185, 461, 2305, 17057, 85285

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: Yes

Tetrahedral: No

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Representations

Binary: 10100110100100101

Octal: 246445

Duodecimal: 41431

Hexadecimal: 14d25

Square: 7273531225

Square Root: 292.0359566902678

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

Irregular table read by rows: n-th row lists the 9 n-gonal numbers of a 3 X 3 semimagic square with the smallest magic sum. The terms of each row are arranged in the manner shown in A261816. A265141

Strong pseudoprimes to base 13. A20239

Heptagonal numbers (A000566) which are also centered square numbers (A001844). A254230

Strong pseudoprimes to base 57. A20283

Strong pseudoprimes to base 72. A20298

Sum of sums of omegas of parts over all integer partitions of n. A325536

Heptagonal numbers which are products of three distinct primes. A356422

Centered square numbers which are sphenic numbers. A380882

Positions where records occur in A072340. A85285