13503493 has 2 divisors, whose sum is σ = 13503494. Its totient is φ = 13503492.

The previous prime is 13503487. The next prime is 13503521. The reversal of 13503493 is 39430531.

13503493 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (13503521) can be obtained adding 13503493 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12517444 + 986049 = 3538^2 + 993^2 .

It is a cyclic number.

It is not a de Polignac number, because 13503493 - 2²¹ = 11406341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13503463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6751746 + 6751747.

It is an arithmetic number, because the mean of its divisors is an integer number (6751747).

Almost surely, 2^13503493 is an apocalyptic number.

It is an amenable number.

13503493 is a deficient number, since it is larger than the sum of its proper divisors (1).

13503493 is an equidigital number, since it uses as much as digits as its factorization.

13503493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4860, while the sum is 28.

The square root of 13503493 is about 3674.7099205243. The cubic root of 13503493 is about 238.1306922905.

It can be divided in two parts, 13 and 503493, that added together give a triangular number (503506 = T₁₀₀₃).

The spelling of 13503493 in words is "thirteen million, five hundred three thousand, four hundred ninety-three".