205045445 has 8 divisors (see below), whose sum is σ = 268423200. Its totient is φ = 149123920.

The previous prime is 205045429. The next prime is 205045471. The reversal of 205045445 is 544540502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 205045445 - 2⁴ = 205045429 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1863995 + ... + 1864104.

It is an arithmetic number, because the mean of its divisors is an integer number (33552900).

Almost surely, 2^205045445 is an apocalyptic number.

It is an amenable number.

205045445 is a deficient number, since it is larger than the sum of its proper divisors (63377755).

205045445 is a wasteful number, since it uses less digits than its factorization.

205045445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3728115.

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

The square root of 205045445 is about 14319.4079835725. The cubic root of 205045445 is about 589.6804215857.

Adding to 205045445 its reverse (544540502), we get a palindrome (749585947).

The spelling of 205045445 in words is "two hundred five million, forty-five thousand, four hundred forty-five".