Properties of the Number 23550

Twenty-Three Thousand Five Hundred Fifty

Basics

Value: 23549 → 23550 → 23551

Parity: even

Prime: No

Previous Prime: 23549

Next Prime: 23557

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 2 × 3 × 5 ² × 157

Divisors: 1, 2, 3, 5, 6, 10, 15, 25, 30, 50

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 101101111111110

Octal: 55776

Duodecimal: 11766

Hexadecimal: 5bfe

Square: 554602500

Square Root: 153.46009253222806

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

Minimal (positive) solution a(n) of Pell equation a(n)² - D(n)*b(n)² = +4 with D(n)= A077425(n). The companion sequence is b(n)=A078355(n). A77428

Number of partitions of n with six designated summands. A384926

Triples of practical numbers: numbers n such that n-2, n, n+2 are all practical numbers. A287682

5-tuples of practical numbers: numbers n such that n-6, n-2, n, n+2, n+6 are all practical numbers. A287683

a(0) = 1, a(n) = 28·n² + 2 for n>0. A10018

a(n) = prime(n)*prime(n+1) - prime(n+1). A37167

Minimal positive solution a(n) of Pell equation a(n)² - D(n)*b(n)² = +4 or -4 with D(n)=A077425(n). The companion sequence is b(n)=A077058(n). A78361

Number of (n+1) X 2 0..3 arrays with every 2 X 2 subblock having nonzero determinant and commuting with every horizontal or vertical neighbor. A206336

Values of k such that F(k)*F(k+1)-1 is a prime, where F(k) is the k-th Fibonacci number (A000045). A271428

Integral area of primitive integer-sided triangles whose sides a < b < c are in arithmetic progression. A351178