205132001 has 4 divisors (see below), whose sum is σ = 205304004. Its totient is φ = 204960000.

The previous prime is 205131977. The next prime is 205132007. The reversal of 205132001 is 100231502.

It is a happy number.

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 58140625 + 146991376 = 7625^2 + 12124^2 .

It is a cyclic number.

It is not a de Polignac number, because 205132001 - 2²² = 200937697 is a prime.

It is a super-3 number, since 3×205132001³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (205132007) 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 3 ways as a sum of consecutive naturals, for example, 84200 + ... + 86601.

It is an arithmetic number, because the mean of its divisors is an integer number (51326001).

Almost surely, 2^205132001 is an apocalyptic number.

It is an amenable number.

205132001 is a deficient number, since it is larger than the sum of its proper divisors (172003).

205132001 is a wasteful number, since it uses less digits than its factorization.

205132001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172002.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 205132001 is about 14322.4299963379. The cubic root of 205132001 is about 589.7633840046.

Adding to 205132001 its reverse (100231502), we get a palindrome (305363503).

The spelling of 205132001 in words is "two hundred five million, one hundred thirty-two thousand, one".