Base | Representation |
---|---|
bin | 110011011111010000… |
… | …001001000011000111 |
3 | 12021200220210000112200 |
4 | 303133100021003013 |
5 | 1401211000024322 |
6 | 41221520445543 |
7 | 3665006042625 |
oct | 633720110307 |
9 | 167626700480 |
10 | 55285158087 |
11 | 214a00375a5 |
12 | a86aa798b3 |
13 | 52a0a009c3 |
14 | 2966620515 |
15 | 16888778ac |
hex | cdf4090c7 |
55285158087 has 24 divisors (see below), whose sum is σ = 81663539568. Its totient is φ = 36030096000.
The previous prime is 55285158013. The next prime is 55285158113. The reversal of 55285158087 is 78085158255.
55285158087 is a `hidden beast` number, since 5 + 5 + 2 + 8 + 51 + 580 + 8 + 7 = 666.
It is not a de Polignac number, because 55285158087 - 215 = 55285125319 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (55285158587) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 219414 + ... + 398387.
It is an arithmetic number, because the mean of its divisors is an integer number (3402647482).
Almost surely, 255285158087 is an apocalyptic number.
55285158087 is a deficient number, since it is larger than the sum of its proper divisors (26378381481).
55285158087 is a wasteful number, since it uses less digits than its factorization.
55285158087 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 618031 (or 618028 counting only the distinct ones).
The product of its (nonzero) digits is 4480000, while the sum is 54.
It can be divided in two parts, 5528 and 5158087, that added together give a palindrome (5163615).
The spelling of 55285158087 in words is "fifty-five billion, two hundred eighty-five million, one hundred fifty-eight thousand, eighty-seven".
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