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Properties of the Number 90155

Ninety Thousand One Hundred Fifty-Five

Basics

Value: 90154 → 90155 → 90156

Parity: odd

Prime: No

Previous Prime: 90149

Next Prime: 90163

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 5 × 13 × 19 × 73

Divisors: 1, 5, 13, 19, 65, 73, 95, 247, 365, 949

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10110000000101011

Octal: 260053

Duodecimal: 4420B

Hexadecimal: 1602b

Square: 8127924025

Square Root: 300.2582222021572

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

Numbers equal to the determinant of a circulant matrix based on the base-9 digits of n. A303369
Least m such that sqrt(m) has a period 2n continued fraction expansion whose palindrome part concatenates to a palindromic prime. A72135
Numbers k such that 3·Rk+2 - 10k is prime, where Rk = 11...1 is the repunit (A002275) of length k. A256375
Number of acyclic digraphs (or DAGs) with n labeled nodes. A3024
Irregular array, read by rows: T(n,k) is the number of labeled acyclic digraphs with n nodes and k arcs (n >= 0, 0 <= k <= n*(n-1)/2). A81064
Number of consistent sets of 3 irreflexive binary order relationships over n objects. A147796
Number of consistent sets of 4 irreflexive binary order relationships over n objects. A147817
Number of consistent sets of 5 irreflexive binary order relationships over n objects. A147821
Number of consistent sets of 6 irreflexive binary order relationships over n objects. A147860
Number of consistent sets of 7 irreflexive binary order relationships over n objects. A147872