205040553 has 16 divisors (see below), whose sum is σ = 290122560. Its totient is φ = 128362496.

The previous prime is 205040513. The next prime is 205040579. The reversal of 205040553 is 355040502.

205040553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 205040553 - 2⁶ = 205040489 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (205040503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19513 + ... + 28121.

It is an arithmetic number, because the mean of its divisors is an integer number (18132660).

Almost surely, 2^205040553 is an apocalyptic number.

It is an amenable number.

205040553 is a deficient number, since it is larger than the sum of its proper divisors (85082007).

205040553 is a wasteful number, since it uses less digits than its factorization.

205040553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9096.

The product of its (nonzero) digits is 3000, while the sum is 24.

The square root of 205040553 is about 14319.2371654359. The cubic root of 205040553 is about 589.6757319918.

The spelling of 205040553 in words is "two hundred five million, forty thousand, five hundred fifty-three".