1045503103 has 4 divisors (see below), whose sum is σ = 1046629440. Its totient is φ = 1044376768.

The previous prime is 1045503097. The next prime is 1045503113. The reversal of 1045503103 is 3013055401.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3013055401 = 17 ⋅177238553.

It is a cyclic number.

It is not a de Polignac number, because 1045503103 - 2²⁹ = 508632191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1045503113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 561775 + ... + 563632.

It is an arithmetic number, because the mean of its divisors is an integer number (261657360).

Almost surely, 2^1045503103 is an apocalyptic number.

1045503103 is a deficient number, since it is larger than the sum of its proper divisors (1126337).

1045503103 is an equidigital number, since it uses as much as digits as its factorization.

1045503103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1126336.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 1045503103 is about 32334.2404116751. The cubic root of 1045503103 is about 1014.9432868892.

Adding to 1045503103 its reverse (3013055401), we get a palindrome (4058558504).

The spelling of 1045503103 in words is "one billion, forty-five million, five hundred three thousand, one hundred three".