205001355 has 32 divisors (see below), whose sum is σ = 371831040. Its totient is φ = 95610240.

The previous prime is 205001309. The next prime is 205001359. The reversal of 205001355 is 553100502.

It is not a de Polignac number, because 205001355 - 2⁹ = 205000843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (205001359) 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 in 31 ways as a sum of consecutive naturals, for example, 23961 + ... + 31370.

It is an arithmetic number, because the mean of its divisors is an integer number (11619720).

Almost surely, 2^205001355 is an apocalyptic number.

205001355 is a deficient number, since it is larger than the sum of its proper divisors (166829685).

205001355 is a wasteful number, since it uses less digits than its factorization.

205001355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55371.

The product of its (nonzero) digits is 750, while the sum is 21.

The square root of 205001355 is about 14317.8683818507. The cubic root of 205001355 is about 589.6381531128.

Adding to 205001355 its reverse (553100502), we get a palindrome (758101857).

The spelling of 205001355 in words is "two hundred five million, one thousand, three hundred fifty-five".