Properties of the Number -161561

One Hundred Sixty-One Thousand Five Hundred Sixty-One

Basics

Value: -161562 → -161561 → -161560

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 161561

Divisors: 1, 161561

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100111011100011001

Octal: -473431

Duodecimal: -795B5

Hexadecimal: -27719

Square: 26101956721

Square Root: 401.9465138547665

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

Emirps (A006567) whose difference with the reversal is a perfect square. A217386

Least prime p(j) of 10 consecutive primes such that 2·p(k)+ 15015 is prime for k=j to j+9. A190793

Primes p such that p+2, p*(p+1)/2-2 and p*(p+1)/2+2 are also primes. A349336

Primes p such that if q and r are the next two primes, 6·q-r, 6·q-p, 6·q+p and 6·q+r are all prime. A351636

Primes q such that 15·q-4, 15·q-2, 15·q+2 and 15·q+4 are all primes. A342717