205352101 has 4 divisors (see below), whose sum is σ = 206008492. Its totient is φ = 204695712.

The previous prime is 205352099. The next prime is 205352123. The reversal of 205352101 is 101253502.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9771876 + 195580225 = 3126^2 + 13985^2 .

It is a cyclic number.

It is not a de Polignac number, because 205352101 - 2¹ = 205352099 is a prime.

It is a super-2 number, since 2×205352101² = 84338970770228402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205352141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 327726 + ... + 328351.

It is an arithmetic number, because the mean of its divisors is an integer number (51502123).

Almost surely, 2^205352101 is an apocalyptic number.

It is an amenable number.

205352101 is a deficient number, since it is larger than the sum of its proper divisors (656391).

205352101 is an equidigital number, since it uses as much as digits as its factorization.

205352101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656390.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 205352101 is about 14330.1116883296. Note that the first 3 decimals coincide. The cubic root of 205352101 is about 589.9742409514.

The spelling of 205352101 in words is "two hundred five million, three hundred fifty-two thousand, one hundred one".