Base | Representation |
---|---|
bin | 101111100010100100… |
… | …001100111001110101 |
3 | 11212202110122100121112 |
4 | 233202210030321311 |
5 | 1314020204443414 |
6 | 35241120124405 |
7 | 3454650660161 |
oct | 574244147165 |
9 | 155673570545 |
10 | 51045781109 |
11 | 1a715015964 |
12 | 9a87166705 |
13 | 4a76618c0b |
14 | 2683597ca1 |
15 | 14db5bad3e |
hex | be290ce75 |
51045781109 has 2 divisors, whose sum is σ = 51045781110. Its totient is φ = 51045781108.
The previous prime is 51045781093. The next prime is 51045781117. The reversal of 51045781109 is 90118754015.
It is a happy number.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 48142942225 + 2902838884 = 219415^2 + 53878^2 .
It is a cyclic number.
It is not a de Polignac number, because 51045781109 - 24 = 51045781093 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (51045781909) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25522890554 + 25522890555.
It is an arithmetic number, because the mean of its divisors is an integer number (25522890555).
Almost surely, 251045781109 is an apocalyptic number.
It is an amenable number.
51045781109 is a deficient number, since it is larger than the sum of its proper divisors (1).
51045781109 is an equidigital number, since it uses as much as digits as its factorization.
51045781109 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 50400, while the sum is 41.
The spelling of 51045781109 in words is "fifty-one billion, forty-five million, seven hundred eighty-one thousand, one hundred nine".
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