Base | Representation |
---|---|
bin | 10011100010001100101001 |
3 | 100122011102121 |
4 | 103202030221 |
5 | 2302331214 |
6 | 301431241 |
7 | 61345321 |
oct | 23421451 |
9 | 10564377 |
10 | 5120809 |
11 | 2988381 |
12 | 186b521 |
13 | 10a3a85 |
14 | 974281 |
15 | 6b2424 |
hex | 4e2329 |
5120809 has 2 divisors, whose sum is σ = 5120810. Its totient is φ = 5120808.
The previous prime is 5120737. The next prime is 5120813. The reversal of 5120809 is 9080215.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 4717584 + 403225 = 2172^2 + 635^2 .
It is a cyclic number.
It is not a de Polignac number, because 5120809 - 27 = 5120681 is a prime.
It is not a weakly prime, because it can be changed into another prime (5120839) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2560404 + 2560405.
It is an arithmetic number, because the mean of its divisors is an integer number (2560405).
Almost surely, 25120809 is an apocalyptic number.
It is an amenable number.
5120809 is a deficient number, since it is larger than the sum of its proper divisors (1).
5120809 is an equidigital number, since it uses as much as digits as its factorization.
5120809 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 720, while the sum is 25.
The square root of 5120809 is about 2262.9204581690. The cubic root of 5120809 is about 172.3638525248.
It can be divided in two parts, 5120 and 809, that added together give a square (5929 = 772).
The spelling of 5120809 in words is "five million, one hundred twenty thousand, eight hundred nine".
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