1145503 has 4 divisors (see below), whose sum is σ = 1148328. Its totient is φ = 1142680.

The previous prime is 1145497. The next prime is 1145509. The reversal of 1145503 is 3055411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3055411 = 29 ⋅105359.

It is an interprime number because it is at equal distance from previous prime (1145497) and next prime (1145509).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1145503 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 (1145509) 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 3 ways as a sum of consecutive naturals, for example, 676 + ... + 1657.

It is an arithmetic number, because the mean of its divisors is an integer number (287082).

2^1145503 is an apocalyptic number.

1145503 is a deficient number, since it is larger than the sum of its proper divisors (2825).

1145503 is an equidigital number, since it uses as much as digits as its factorization.

1145503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2824.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 1145503 is about 1070.2817386090. The cubic root of 1145503 is about 104.6322128655.

The spelling of 1145503 in words is "one million, one hundred forty-five thousand, five hundred three".