1153503 has 12 divisors (see below), whose sum is σ = 1794520. Its totient is φ = 709776.

The previous prime is 1153487. The next prime is 1153511. The reversal of 1153503 is 3053511.

It is a happy number.

It is not a de Polignac number, because 1153503 - 2⁴ = 1153487 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1153553) 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 11 ways as a sum of consecutive naturals, for example, 4813 + ... + 5046.

2^1153503 is an apocalyptic number.

1153503 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1153503 is a deficient number, since it is larger than the sum of its proper divisors (641017).

1153503 is a wasteful number, since it uses less digits than its factorization.

1153503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9878 (or 9875 counting only the distinct ones).

The product of its (nonzero) digits is 225, while the sum is 18.

The square root of 1153503 is about 1074.0125697588. The cubic root of 1153503 is about 104.8752259363.

The spelling of 1153503 in words is "one million, one hundred fifty-three thousand, five hundred three".