Base | Representation |
---|---|
bin | 110010001011… |
… | …101011000101 |
3 | 220202100021201 |
4 | 302023223011 |
5 | 11331430023 |
6 | 1145542501 |
7 | 216546544 |
oct | 62135305 |
9 | 26670251 |
10 | 13155013 |
11 | 7475613 |
12 | 44a4a31 |
13 | 2957941 |
14 | 1a6615b |
15 | 124cbad |
hex | c8bac5 |
13155013 has 2 divisors, whose sum is σ = 13155014. Its totient is φ = 13155012.
The previous prime is 13154963. The next prime is 13155031. The reversal of 13155013 is 31055131.
13155013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
Together with next prime (13155031) it forms an Ormiston pair, because they use the same digits, order apart.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 7851204 + 5303809 = 2802^2 + 2303^2 .
It is a cyclic number.
It is not a de Polignac number, because 13155013 - 221 = 11057861 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (13155083) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6577506 + 6577507.
It is an arithmetic number, because the mean of its divisors is an integer number (6577507).
Almost surely, 213155013 is an apocalyptic number.
It is an amenable number.
13155013 is a deficient number, since it is larger than the sum of its proper divisors (1).
13155013 is an equidigital number, since it uses as much as digits as its factorization.
13155013 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 225, while the sum is 19.
The square root of 13155013 is about 3626.9840087875. The cubic root of 13155013 is about 236.0643616950.
It can be divided in two parts, 1315 and 5013, that added together give a triangular number (6328 = T112).
The spelling of 13155013 in words is "thirteen million, one hundred fifty-five thousand, thirteen".
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