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205144053 = 3212932119
BaseRepresentation
bin11000011101000…
…11111111110101
3112022000101201220
430032203333311
5410004102203
632204540553
75040460422
oct1416437765
9468011656
10205144053
11a5886844
1258851759
133366881a
141d360d49
1513023653
hexc3a3ff5

205144053 has 8 divisors (see below), whose sum is σ = 273662400. Its totient is φ = 136694208.

The previous prime is 205144031. The next prime is 205144067. The reversal of 205144053 is 350441502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 205144053 - 224 = 188366837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200144053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9673 + ... + 22446.

It is an arithmetic number, because the mean of its divisors is an integer number (34207800).

Almost surely, 2205144053 is an apocalyptic number.

It is an amenable number.

205144053 is a deficient number, since it is larger than the sum of its proper divisors (68518347).

205144053 is a wasteful number, since it uses less digits than its factorization.

205144053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34251.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 205144053 is about 14322.8507288179. The cubic root of 205144053 is about 589.7749337857.

Adding to 205144053 its reverse (350441502), we get a palindrome (555585555).

The spelling of 205144053 in words is "two hundred five million, one hundred forty-four thousand, fifty-three".

Divisors: 1 3 2129 6387 32119 96357 68381351 205144053