Properties of the Number 56280

Fifty-Six Thousand Two Hundred Eighty

Basics

Value: 56279 → 56280 → 56281

Parity: even

Prime: No

Previous Prime: 56269

Next Prime: 56299

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 ³ × 3 × 5 × 7 × 67

Divisors: 1, 2, 3, 4, 5, 6, 7, 8, 10, 12

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: Yes

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1101101111011000

Octal: 155730

Duodecimal: 286A0

Hexadecimal: dbd8

Square: 3167438400

Square Root: 237.23406163533937

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

Primorial deflation of the n-th colossally abundant number: the unique integer k such that A108951(k) = A004490(n). A342012

Numbers n such that {largest m such that 1, 2, ..., m divide n} is different from {largest m such that m! divides n²}. A232099

The first of two consecutive triangular numbers the sum of which is equal to the sum of two consecutive prime numbers. A298462

Triangular numbers with sum of digits = 21. A68131

Triangular numbers that are sandwiched between two semiprimes; or triangular numbers t such that t-1 and t+1 are both semiprime. A121898

Triangular numbers T from A000217 such that (4·T+1)/13 is prime. A208294

Semiperimeter of the unique primitive Pythagorean triple whose inradius is the n-th prime and whose short leg is an odd number. A382070

a(n) = 1·3*5 + 3·5*7 + 5·7*9 + ... (n terms). A196506

Triangular numbers k whose divisors can be partitioned into three disjoint sets whose sums are all σ(k)/3. A206025

Indices of primes in sequence defined by A(0) = 89, A(n) = 10·A(n-1) - 41 for n > 0. A101069