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Properties of the Number 1961

One Thousand Nine Hundred Sixty-One

Basics

Value: 1960 → 1961 → 1962

Parity: odd

Prime: No

Previous Prime: 1951

Next Prime: 1973

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 37 × 53

Divisors: 1, 37, 53, 1961

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 11110101001

Octal: 3651

Duodecimal: 1175

Hexadecimal: 7a9

Square: 3845521

Square Root: 44.28317965096906

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

Number of points of norm <= n2 in square lattice. A328
a(n) = A005449(n) - 1, where A005449 = second pentagonal numbers. A95794
Strobogrammatic numbers: the same upside down. A787
a(n) = n*(n + 16). A98849
Iterate the map in A006369 starting at 144. A185589
Trajectory of 64 under the map n-> A006369(n). A223083
Consider all permutations pi of the first n primes; a(n) is the minimum over pi of the maximal product of two adjacent primes in the permutation. A332765
Sorted positions of first appearances in A057820, the sequence of first differences of prime-powers. A376340
Array read by antidiagonals of coefficients of generating function exp(x)/(1-y-xy). A88699
a(n) is the smallest m for which 7m contains n consecutive identical digits. A215730