Base | Representation |
---|---|
bin | 110001101001… |
… | …000000111111 |
3 | 220111010120000 |
4 | 301221000333 |
5 | 11312404210 |
6 | 1142525343 |
7 | 215415636 |
oct | 61510077 |
9 | 26433500 |
10 | 13013055 |
11 | 73889a0 |
12 | 4436853 |
13 | 2908143 |
14 | 1a2a51d |
15 | 1220ac0 |
hex | c6903f |
13013055 has 80 divisors (see below), whose sum is σ = 26763264. Its totient is φ = 5987520.
The previous prime is 13013027. The next prime is 13013057. The reversal of 13013055 is 55031031.
It is a happy number.
13013055 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is not a de Polignac number, because 13013055 - 25 = 13013023 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (13013057) by changing a digit.
It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 102402 + ... + 102528.
Almost surely, 213013055 is an apocalyptic number.
13013055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
13013055 is an abundant number, since it is smaller than the sum of its proper divisors (13750209).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
13013055 is a wasteful number, since it uses less digits than its factorization.
13013055 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 178 (or 169 counting only the distinct ones).
The product of its (nonzero) digits is 225, while the sum is 18.
The square root of 13013055 is about 3607.3612239420. The cubic root of 13013055 is about 235.2121518607.
Adding to 13013055 its reverse (55031031), we get a palindrome (68044086).
It can be divided in two parts, 1301 and 3055, that added together give a square (4356 = 662).
The spelling of 13013055 in words is "thirteen million, thirteen thousand, fifty-five".
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