Properties of the Number 57970

Fifty-Seven Thousand Nine Hundred Seventy

Basics

Value: 57969 → 57970 → 57971

Parity: even

Prime: No

Previous Prime: 57947

Next Prime: 57973

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 2 × 5 × 11 × 17 × 31

Divisors: 1, 2, 5, 10, 11, 17, 22, 31, 34, 55

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1110001001110010

Octal: 161162

Duodecimal: 2966A

Hexadecimal: e272

Square: 3360520900

Square Root: 240.76959940989227

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

a(1) = 1; for n > 1, a(n) = prime(A101296(n)-1) * a(floor(n/2)). A292258

a(n) = floor(C(n+8,8)/C(n+2,2)). A84631

Number of regions in a polygon whose boundary consists of n+2 equally spaced points around a semicircle and three equally spaced points along the diameter (a total of n+3 points). See Comments for precise definition. A333642

Triangle of the elementwise product of binomial coefficients with q-binomial coefficients [n,k] for q = 4. A157641

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

Triangular numbers which are the sum of distinct double factorials (A006882). A115650

a(n) is the number in the first column of the Trithoff (tribonacci) array that starts off the row containing the tail of n times the tribonacci sequence. A351689

Number of unordered pairs of strict integer partitions of n. A366317

Triangular numbers with sum of digits = 28. A68132

Triangular numbers whose sum of prime factors (with repetition) is also triangular. A76169