1045172503 has 4 divisors (see below), whose sum is σ = 1045240920. Its totient is φ = 1045104088.

The previous prime is 1045172467. The next prime is 1045172519. The reversal of 1045172503 is 3052715401.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1045172503 - 2⁹ = 1045171991 is a prime.

It is a super-2 number, since 2×1045172503² = 2184771122054570018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1045172203) 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, 333 + ... + 45721.

It is an arithmetic number, because the mean of its divisors is an integer number (261310230).

Almost surely, 2^1045172503 is an apocalyptic number.

1045172503 is a deficient number, since it is larger than the sum of its proper divisors (68417).

1045172503 is an equidigital number, since it uses as much as digits as its factorization.

1045172503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68416.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 1045172503 is about 32329.1277797592. The cubic root of 1045172503 is about 1014.8362967320.

Adding to 1045172503 its reverse (3052715401), we get a palindrome (4097887904).

The spelling of 1045172503 in words is "one billion, forty-five million, one hundred seventy-two thousand, five hundred three".