Base | Representation |
---|---|
bin | 111011110000001… |
… | …1110000101101010 |
3 | 12011201202120200210 |
4 | 1313200132011222 |
5 | 13101240004204 |
6 | 530542041550 |
7 | 100454136444 |
oct | 16740360552 |
9 | 5151676623 |
10 | 2005000554 |
11 | 939852657 |
12 | 47b5792b6 |
13 | 25c50847b |
14 | 1503db494 |
15 | bb04e389 |
hex | 7781e16a |
2005000554 has 8 divisors (see below), whose sum is σ = 4010001120. Its totient is φ = 668333516.
The previous prime is 2005000541. The next prime is 2005000559. The reversal of 2005000554 is 4550005002.
It is a sphenic number, since it is the product of 3 distinct primes.
2005000554 is an admirable number.
It is a self number, because there is not a number n which added to its sum of digits gives 2005000554.
It is not an unprimeable number, because it can be changed into a prime (2005000559) 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, 167083374 + ... + 167083385.
It is an arithmetic number, because the mean of its divisors is an integer number (501250140).
Almost surely, 22005000554 is an apocalyptic number.
2005000554 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2005000554 is a wasteful number, since it uses less digits than its factorization.
2005000554 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 334166764.
The product of its (nonzero) digits is 1000, while the sum is 21.
The square root of 2005000554 is about 44777.2325406562. The cubic root of 2005000554 is about 1260.9702265103.
Adding to 2005000554 its reverse (4550005002), we get a palindrome (6555005556).
The spelling of 2005000554 in words is "two billion, five million, five hundred fifty-four", and thus it is an aban number.
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