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2005141 = 3754193
BaseRepresentation
bin111101001100010010101
310202212112111
413221202111
51003131031
6110551021
723020615
oct7514225
93685474
102005141
11114a546
12808471
13552898
143a2a45
152991b1
hex1e9895

2005141 has 4 divisors (see below), whose sum is σ = 2059372. Its totient is φ = 1950912.

The previous prime is 2005139. The next prime is 2005151. The reversal of 2005141 is 1415002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1415002 = 2707501.

It can be written as a sum of positive squares in 2 ways, for example, as 1745041 + 260100 = 1321^2 + 510^2 .

It is a cyclic number.

It is not a de Polignac number, because 2005141 - 21 = 2005139 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 (2005121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27060 + ... + 27133.

It is an arithmetic number, because the mean of its divisors is an integer number (514843).

22005141 is an apocalyptic number.

It is an amenable number.

2005141 is a deficient number, since it is larger than the sum of its proper divisors (54231).

2005141 is an equidigital number, since it uses as much as digits as its factorization.

2005141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54230.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 2005141 is about 1416.0300138062. The cubic root of 2005141 is about 126.0999668579.

The spelling of 2005141 in words is "two million, five thousand, one hundred forty-one".

Divisors: 1 37 54193 2005141