13545503 has 2 divisors, whose sum is σ = 13545504. Its totient is φ = 13545502.

The previous prime is 13545449. The next prime is 13545527. The reversal of 13545503 is 30554531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13545503 - 2⁸ = 13545247 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 (13547503) 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 as a sum of consecutive naturals, namely, 6772751 + 6772752.

It is an arithmetic number, because the mean of its divisors is an integer number (6772752).

Almost surely, 2^13545503 is an apocalyptic number.

13545503 is a deficient number, since it is larger than the sum of its proper divisors (1).

13545503 is an equidigital number, since it uses as much as digits as its factorization.

13545503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 13545503 is about 3680.4215791129. The cubic root of 13545503 is about 238.3773818966.

Subtracting 13545503 from its reverse (30554531), we obtain a triangular number (17009028 = T₅₈₃₂).

The spelling of 13545503 in words is "thirteen million, five hundred forty-five thousand, five hundred three".