204550745 has 24 divisors (see below), whose sum is σ = 289472904. Its totient is φ = 138329856.

The previous prime is 204550739. The next prime is 204550757. The reversal of 204550745 is 547055402.

It can be written as a sum of positive squares in 4 ways, for example, as 12645136 + 191905609 = 3556^2 + 13853^2 .

It is not a de Polignac number, because 204550745 - 2⁴ = 204550729 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12167 + ... + 23603.

It is an arithmetic number, because the mean of its divisors is an integer number (12061371).

Almost surely, 2^204550745 is an apocalyptic number.

It is an amenable number.

204550745 is a deficient number, since it is larger than the sum of its proper divisors (84922159).

204550745 is a wasteful number, since it uses less digits than its factorization.

204550745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11529 (or 11522 counting only the distinct ones).

The product of its (nonzero) digits is 28000, while the sum is 32.

The square root of 204550745 is about 14302.1237933392. The cubic root of 204550745 is about 589.2058116439.

The spelling of 204550745 in words is "two hundred four million, five hundred fifty thousand, seven hundred forty-five".