205534450 has 48 divisors (see below), whose sum is σ = 418678560. Its totient is φ = 74448000.

The previous prime is 205534409. The next prime is 205534451. The reversal of 205534450 is 54435502.

It is not an unprimeable number, because it can be changed into a prime (205534451) 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 23 ways as a sum of consecutive naturals, for example, 181486 + ... + 182614.

It is an arithmetic number, because the mean of its divisors is an integer number (8722470).

Almost surely, 2^205534450 is an apocalyptic number.

205534450 is an abundant number, since it is smaller than the sum of its proper divisors (213144110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205534450 is a wasteful number, since it uses less digits than its factorization.

205534450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1483 (or 1478 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 28.

The square root of 205534450 is about 14336.4727182107. The cubic root of 205534450 is about 590.1488181526.

Adding to 205534450 its reverse (54435502), we get a palindrome (259969952).

The spelling of 205534450 in words is "two hundred five million, five hundred thirty-four thousand, four hundred fifty".