205535047 has 8 divisors (see below), whose sum is σ = 209496512. Its totient is φ = 201592800.

The previous prime is 205534997. The next prime is 205535051. The reversal of 205535047 is 740535502.

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

It is not a de Polignac number, because 205535047 - 2¹⁹ = 205010759 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 (205535647) 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, 17797 + ... + 26977.

It is an arithmetic number, because the mean of its divisors is an integer number (26187064).

Almost surely, 2^205535047 is an apocalyptic number.

205535047 is a deficient number, since it is larger than the sum of its proper divisors (3961465).

205535047 is an equidigital number, since it uses as much as digits as its factorization.

205535047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9609.

The product of its (nonzero) digits is 21000, while the sum is 31.

The square root of 205535047 is about 14336.4935392166. The cubic root of 205535047 is about 590.1493895386.

It can be divided in two parts, 20553 and 5047, that added together give a square (25600 = 160²).

The spelling of 205535047 in words is "two hundred five million, five hundred thirty-five thousand, forty-seven".