Properties of the Number 90525

Ninety Thousand Five Hundred Twenty-Five

Basics

Value: 90524 → 90525 → 90526

Parity: odd

Prime: No

Previous Prime: 90523

Next Prime: 90527

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 5 ² × 17 × 71

Divisors: 1, 3, 5, 15, 17, 25, 51, 71, 75, 85

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: Yes

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10110000110011101

Octal: 260635

Duodecimal: 44479

Hexadecimal: 1619d

Square: 8194775625

Square Root: 300.8737276666077

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

Triangular numbers t which are average of two consecutive primes p and p+4. A129752

Hexagonal numbers (A000384) in which parity of digits alternates. A297645

Times on a 12-hour digital clock with 6 digits at which the three continuously moving hands of an analog clock, in the best approximation, enclose the same angles with one another, i.e., have the smallest sum of squares of the deviations from 120 degrees. When interpreting the terms as times of the day in the form hh:mm:ss, padding to the left with zeros is assumed. A347040

Indices of prime numbers in A014260. A101762

Triangular numbers with property that digits alternate in parity individually as well as in concatenation with previous terms. A68889

Triangular numbers n with digits d₁, d₂, ..., d_k such that d₁*(d₁+1)/2 + ... + d_k*(d_k+1)/2 is a triangular number. A254957

Representation degeneracies for boson strings. A5291

Representation degeneracies for boson strings. A5290

Least number k such that floor((nⁿ)/k) is prime, or 0 if no such number exists. A90525

Representation degeneracies for boson strings. A5292