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205054474 = 2102527237
BaseRepresentation
bin11000011100011…
…10001000001010
3112021211211212011
430032032020022
5404443220344
632203010134
75036635312
oct1416161012
9467754764
10205054474
11a5825509
125880994a
1333636b11
141d33a442
1513006d34
hexc38e20a

205054474 has 4 divisors (see below), whose sum is σ = 307581714. Its totient is φ = 102527236.

The previous prime is 205054471. The next prime is 205054501. The reversal of 205054474 is 474450502.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 118657449 + 86397025 = 10893^2 + 9295^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (205054471) 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 as a sum of consecutive naturals, namely, 51263617 + ... + 51263620.

Almost surely, 2205054474 is an apocalyptic number.

205054474 is a deficient number, since it is larger than the sum of its proper divisors (102527240).

205054474 is a wasteful number, since it uses less digits than its factorization.

205054474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102527239.

The product of its (nonzero) digits is 22400, while the sum is 31.

The square root of 205054474 is about 14319.7232515157. The cubic root of 205054474 is about 589.6890768155.

The spelling of 205054474 in words is "two hundred five million, fifty-four thousand, four hundred seventy-four".

Divisors: 1 2 102527237 205054474