204155443 has 8 divisors (see below), whose sum is σ = 209241648. Its totient is φ = 199084704.

The previous prime is 204155387. The next prime is 204155449. The reversal of 204155443 is 344551402.

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

It is a cyclic number.

It is not a de Polignac number, because 204155443 - 2¹⁷ = 204024371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204155449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25605 + ... + 32617.

It is an arithmetic number, because the mean of its divisors is an integer number (26155206).

Almost surely, 2^204155443 is an apocalyptic number.

204155443 is a deficient number, since it is larger than the sum of its proper divisors (5086205).

204155443 is an equidigital number, since it uses as much as digits as its factorization.

204155443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7733.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 204155443 is about 14288.2974143178. The cubic root of 204155443 is about 588.8260127574.

The spelling of 204155443 in words is "two hundred four million, one hundred fifty-five thousand, four hundred forty-three".