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Properties of the Number 21077

Twenty-One Thousand Seventy-Seven

Basics

Value: 21076 → 21077 → 21078

Parity: odd

Prime: No

Previous Prime: 21067

Next Prime: 21089

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 7 × 3011

Divisors: 1, 7, 3011, 21077

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

603 Try Today's Challenge

Representations

Binary: 101001001010101

Octal: 51125

Duodecimal: 10245

Hexadecimal: 5255

Square: 444239929

Square Root: 145.17919961206564

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 factorization patterns of polynomials of degree n over integers. A6171
Number of legal starting configurations in the glass worms (or vers de verres) game with n glasses. A151987
a(1) = 1; thereafter a(n) is always the smallest integer > a(n-1) not leading to a contradiction, such that any five consecutive digits in the sequence sum up to a prime. A152605
Number of partitions of (5, n) into a sum of distinct pairs. A268348
Record values in permutation A267107. A268394
Number of binary words of length n containing at least one subword 1081 and no subwords 10i1 with i<8. A143288
Numbers whose base-2 representation has exactly 13 runs. A43580
Squares where A323809 gets stuck. A323813
Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1001-1001-1111 pattern in any orientation. A147406
Decimal expansion of 1/73. A21077