1053503403 has 4 divisors (see below), whose sum is σ = 1404671208. Its totient is φ = 702335600.

The previous prime is 1053503383. The next prime is 1053503443. The reversal of 1053503403 is 3043053501.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1053503403 - 2¹⁰ = 1053502379 is a prime.

It is a super-2 number, since 2×1053503403² = 2219738840265160818, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1053503443) 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, 175583898 + ... + 175583903.

It is an arithmetic number, because the mean of its divisors is an integer number (351167802).

Almost surely, 2^1053503403 is an apocalyptic number.

1053503403 is a deficient number, since it is larger than the sum of its proper divisors (351167805).

1053503403 is an equidigital number, since it uses as much as digits as its factorization.

1053503403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351167804.

The product of its (nonzero) digits is 2700, while the sum is 24.

The square root of 1053503403 is about 32457.7171563251. The cubic root of 1053503403 is about 1017.5255292047.

Adding to 1053503403 its reverse (3043053501), we get a palindrome (4096556904).

The spelling of 1053503403 in words is "one billion, fifty-three million, five hundred three thousand, four hundred three".