205532506 has 16 divisors (see below), whose sum is σ = 312534720. Its totient is φ = 101360160.

The previous prime is 205532497. The next prime is 205532507. The reversal of 205532506 is 605235502.

205532506 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×205532506² = 84487222045280072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (205532507) 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 7 ways as a sum of consecutive naturals, for example, 85501 + ... + 87871.

It is an arithmetic number, because the mean of its divisors is an integer number (19533420).

Almost surely, 2^205532506 is an apocalyptic number.

205532506 is a deficient number, since it is larger than the sum of its proper divisors (107002214).

205532506 is a wasteful number, since it uses less digits than its factorization.

205532506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2949.

The product of its (nonzero) digits is 9000, while the sum is 28.

The square root of 205532506 is about 14336.4049189467. The cubic root of 205532506 is about 590.1469575515.

The spelling of 205532506 in words is "two hundred five million, five hundred thirty-two thousand, five hundred six".