Base | Representation |
---|---|
bin | 111100000011100… |
… | …1010000010100111 |
3 | 12012102211211012221 |
4 | 1320013022002213 |
5 | 13111334021210 |
6 | 531543253211 |
7 | 100636265503 |
oct | 17007120247 |
9 | 5172754187 |
10 | 2015142055 |
11 | 94454a063 |
12 | 482a4a207 |
13 | 261649564 |
14 | 1518bb303 |
15 | bbda41da |
hex | 781ca0a7 |
2015142055 has 8 divisors (see below), whose sum is σ = 2425800672. Its totient is φ = 1607026848.
The previous prime is 2015142043. The next prime is 2015142091. The reversal of 2015142055 is 5502415102.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 2015142055 - 217 = 2015010983 is a prime.
It is a Duffinian number.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 634107 + ... + 637276.
It is an arithmetic number, because the mean of its divisors is an integer number (303225084).
Almost surely, 22015142055 is an apocalyptic number.
2015142055 is a deficient number, since it is larger than the sum of its proper divisors (410658617).
2015142055 is a wasteful number, since it uses less digits than its factorization.
2015142055 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1271705.
The product of its (nonzero) digits is 2000, while the sum is 25.
The square root of 2015142055 is about 44890.3336476797. Note that the first 3 decimals coincide. The cubic root of 2015142055 is about 1263.0926914213.
Adding to 2015142055 its reverse (5502415102), we get a palindrome (7517557157).
The spelling of 2015142055 in words is "two billion, fifteen million, one hundred forty-two thousand, fifty-five".
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