203104445 has 4 divisors (see below), whose sum is σ = 243725340. Its totient is φ = 162483552.

The previous prime is 203104417. The next prime is 203104453. The reversal of 203104445 is 544401302.

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

It can be written as a sum of positive squares in 2 ways, for example, as 129367876 + 73736569 = 11374^2 + 8587^2 .

It is a cyclic number.

It is not a de Polignac number, because 203104445 - 2⁶ = 203104381 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 203104445.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 20310440 + ... + 20310449.

It is an arithmetic number, because the mean of its divisors is an integer number (60931335).

Almost surely, 2^203104445 is an apocalyptic number.

It is an amenable number.

203104445 is a deficient number, since it is larger than the sum of its proper divisors (40620895).

203104445 is an equidigital number, since it uses as much as digits as its factorization.

203104445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40620894.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 203104445 is about 14251.4716783917. The cubic root of 203104445 is about 587.8138428779.

Adding to 203104445 its reverse (544401302), we get a palindrome (747505747).

The spelling of 203104445 in words is "two hundred three million, one hundred four thousand, four hundred forty-five".