11145503 has 2 divisors, whose sum is σ = 11145504. Its totient is φ = 11145502.

The previous prime is 11145499. The next prime is 11145521. The reversal of 11145503 is 30554111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11145503 - 2² = 11145499 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11145583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5572751 + 5572752.

It is an arithmetic number, because the mean of its divisors is an integer number (5572752).

Almost surely, 2^11145503 is an apocalyptic number.

11145503 is a deficient number, since it is larger than the sum of its proper divisors (1).

11145503 is an equidigital number, since it uses as much as digits as its factorization.

11145503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 11145503 is about 3338.4881308760. The cubic root of 11145503 is about 223.3743101961.

Adding to 11145503 its reverse (30554111), we get a palindrome (41699614).

The spelling of 11145503 in words is "eleven million, one hundred forty-five thousand, five hundred three".