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205343053 = 331361981
BaseRepresentation
bin11000011110101…
…00100101001101
3112022101111201021
430033110211031
5410031434203
632213114141
75042246536
oct1417244515
9468344637
10205343053
11a5a02303
1258928951
1333708286
141d3b368d
15130625bd
hexc3d494d

205343053 has 4 divisors (see below), whose sum is σ = 205408348. Its totient is φ = 205277760.

The previous prime is 205343027. The next prime is 205343059. The reversal of 205343053 is 350343502.

It is a happy number.

205343053 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 350343502 = 2175171751.

It can be written as a sum of positive squares in 2 ways, for example, as 160224964 + 45118089 = 12658^2 + 6717^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-205343053 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 (205343059) 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, 27678 + ... + 34303.

It is an arithmetic number, because the mean of its divisors is an integer number (51352087).

Almost surely, 2205343053 is an apocalyptic number.

It is an amenable number.

205343053 is a deficient number, since it is larger than the sum of its proper divisors (65295).

205343053 is an equidigital number, since it uses as much as digits as its factorization.

205343053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65294.

The product of its (nonzero) digits is 5400, while the sum is 25.

The square root of 205343053 is about 14329.7959859867. The cubic root of 205343053 is about 589.9655758906.

Adding to 205343053 its reverse (350343502), we get a palindrome (555686555).

The spelling of 205343053 in words is "two hundred five million, three hundred forty-three thousand, fifty-three".

Divisors: 1 3313 61981 205343053