Properties of the Number 57421

Fifty-Seven Thousand Four Hundred Twenty-One

Basics

Value: 57420 → 57421 → 57422

Parity: odd

Prime: No

Previous Prime: 57413

Next Prime: 57427

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 7 × 13 × 631

Divisors: 1, 7, 13, 91, 631, 4417, 8203, 57421

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1110000001001101

Octal: 160115

Duodecimal: 29291

Hexadecimal: e04d

Square: 3297171241

Square Root: 239.62679315969658

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

Composite integers k such that 2^k == 2 (mod k*(k+1)). A217465

Number of sum of squares representations of n² in n dimensions disregarding order and sign. A105152

Fermat pseudoprimes to base 2 with three prime factors. A215672

Number of compositions of 2n such that the largest multiplicity of parts equals n. A232665

G.f. of the z³ coefficients of the FP1 in the fourth column of the A156921 matrix. A156930

Number of ordered rooted trees with n non-root nodes and all outdegrees <= six. A36768

Sarrus numbers with more than 2 distinct prime factors. A80747

Number of binary strings of length n with no substrings equal to 000, 010, or 111. A164317

Sarrus numbers n (A001567) which satisfy μ(n) = -1 and which are not Super-Poulet numbers (A050217). A74380

Strong pseudoprimes to base 69. A20295