205355147 has 2 divisors, whose sum is σ = 205355148. Its totient is φ = 205355146.

The previous prime is 205355141. The next prime is 205355159. The reversal of 205355147 is 741553502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 205355147 - 2⁴ = 205355131 is a prime.

It is a super-3 number, since 3×205355147³ (a number of 26 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (205355141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102677573 + 102677574.

It is an arithmetic number, because the mean of its divisors is an integer number (102677574).

Almost surely, 2^205355147 is an apocalyptic number.

205355147 is a deficient number, since it is larger than the sum of its proper divisors (1).

205355147 is an equidigital number, since it uses as much as digits as its factorization.

205355147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21000, while the sum is 32.

The square root of 205355147 is about 14330.2179676375. The cubic root of 205355147 is about 589.9771579781.

It can be divided in two parts, 205355 and 147, that added together give a palindrome (205502).

The spelling of 205355147 in words is "two hundred five million, three hundred fifty-five thousand, one hundred forty-seven".