Base | Representation |
---|---|
bin | 110011010010… |
… | …101011011111 |
3 | 221022010020122 |
4 | 303102223133 |
5 | 11420231410 |
6 | 1200105155 |
7 | 222200513 |
oct | 63225337 |
9 | 27263218 |
10 | 13445855 |
11 | 7654085 |
12 | 46051bb |
13 | 2a2a137 |
14 | 1b00143 |
15 | 12a8e55 |
hex | cd2adf |
13445855 has 4 divisors (see below), whose sum is σ = 16135032. Its totient is φ = 10756680.
The previous prime is 13445851. The next prime is 13445893. The reversal of 13445855 is 55854431.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55854431 = 113 ⋅494287.
It is not a de Polignac number, because 13445855 - 22 = 13445851 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (13445851) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1344581 + ... + 1344590.
It is an arithmetic number, because the mean of its divisors is an integer number (4033758).
Almost surely, 213445855 is an apocalyptic number.
13445855 is a deficient number, since it is larger than the sum of its proper divisors (2689177).
13445855 is an equidigital number, since it uses as much as digits as its factorization.
13445855 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2689176.
The product of its digits is 48000, while the sum is 35.
The square root of 13445855 is about 3666.8590101066. The cubic root of 13445855 is about 237.7913985575.
The spelling of 13445855 in words is "thirteen million, four hundred forty-five thousand, eight hundred fifty-five".
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