Properties of the Number -212521

Two Hundred Twelve Thousand Five Hundred Twenty-One

Basics

Value: -212522 → -212521 → -212520

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 461 ²

Divisors: 1, 461, 212521

Polygonal

Triangular: No

Square: Yes

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -110011111000101001

Octal: -637051

Duodecimal: -A2BA1

Hexadecimal: -33e29

Square: 45165175441

Square Root: 461

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

Squares in which parity of digits alternates. A30152

a(n) = n*(n+1)*(n+2)*(n+3)+1 = (n² + 3·n + 1)². A62938

Squares whose largest digit is 5. A295015

Squares of lesser of twin primes. A108570

Square numbers in A070552. A263951

a(n) = x² = A090116(n)² is the least square that is "surrounded" by two closest primes, by prevprime(x²) and nextprime(x²) whose difference nextprime - prevprime = 2n. A90117

a(n) = A379119(A379121(n)), where A379121 gives those odd squares k for which A379113(k) > 1 and A379119(n) = n/A379113(n). A379124

Odd squares in which parity of digits alternates. A30156

Numbers of the form prime(p)^q where p and q are primes. Prime powers whose prime index and exponent are both prime. A352519

The smaller of a pair of successive powerful numbers (A001694) without any prime number between them. A240591