204045554 has 4 divisors (see below), whose sum is σ = 306068334. Its totient is φ = 102022776.

The previous prime is 204045529. The next prime is 204045571. The reversal of 204045554 is 455540402.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 163149529 + 40896025 = 12773^2 + 6395^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51011387 + ... + 51011390.

Almost surely, 2^204045554 is an apocalyptic number.

204045554 is a deficient number, since it is larger than the sum of its proper divisors (102022780).

204045554 is a wasteful number, since it uses less digits than its factorization.

204045554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102022779.

The product of its (nonzero) digits is 16000, while the sum is 29.

The square root of 204045554 is about 14284.4514770431. The cubic root of 204045554 is about 588.7203463532.

Adding to 204045554 its reverse (455540402), we get a palindrome (659585956).

The spelling of 204045554 in words is "two hundred four million, forty-five thousand, five hundred fifty-four".