205132461 has 4 divisors (see below), whose sum is σ = 273509952. Its totient is φ = 136754972.

The previous prime is 205132391. The next prime is 205132463. The reversal of 205132461 is 164231502.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 205132461 - 2¹⁷ = 205001389 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205132463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34188741 + ... + 34188746.

It is an arithmetic number, because the mean of its divisors is an integer number (68377488).

Almost surely, 2^205132461 is an apocalyptic number.

It is an amenable number.

205132461 is a deficient number, since it is larger than the sum of its proper divisors (68377491).

205132461 is an equidigital number, since it uses as much as digits as its factorization.

205132461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68377490.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 205132461 is about 14322.4460550564. The cubic root of 205132461 is about 589.7638248443.

Adding to 205132461 its reverse (164231502), we get a palindrome (369363963).

The spelling of 205132461 in words is "two hundred five million, one hundred thirty-two thousand, four hundred sixty-one".