Properties of the Number 26570

Twenty-Six Thousand Five Hundred Seventy

Basics

Value: 26569 → 26570 → 26571

Parity: even

Prime: No

Previous Prime: 26561

Next Prime: 26573

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 × 5 × 2657

Divisors: 1, 2, 5, 10, 2657, 5314, 13285, 26570

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110011111001010

Octal: 63712

Duodecimal: 13462

Hexadecimal: 67ca

Square: 705964900

Square Root: 163.00306745579974

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(n) = prime(n)² + 1. A66872

Least b > p_n² such that [p₁²,p₂²,...,p_n²] in base b is prime, where p_j denotes the j-th prime. A224197

The smallest numbers of every class in a classification of positive numbers (see comment). A247395

Number of partitions of n such that (least part) = (multiplicity of greatest part). A240180

Least integer k>1 such that sqrt(k)/log(k) exceeds n. A262058

Number of partitions of n into parts with at most one 1 and at most one 2. A121081

Solution of the complementary equation a(n) = a(n-1) + a(n-2) + b(n) + 1, where a(0) = 2, a(1) = 3, b(0) = 1, b(1) = 4, b(2) = 5, and (a(n)) and (b(n)) are increasing complementary sequences. A295958

Numbers that contain as proper substrings every maximal prime power dividing them. A59401

Numbers that cannot be partitioned into two or more distinct even-valued terms or distinct odd-valued terms of the sequence. A279953

a(1) = 7; a(n+1) = a(n)-th nonprime, where nonprimes begin at 1. A25006