13378543 has 2 divisors, whose sum is σ = 13378544. Its totient is φ = 13378542.

The previous prime is 13378523. The next prime is 13378549. The reversal of 13378543 is 34587331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13378543 - 2⁵ = 13378511 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13378499 and 13378508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13378549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6689271 + 6689272.

It is an arithmetic number, because the mean of its divisors is an integer number (6689272).

Almost surely, 2^13378543 is an apocalyptic number.

13378543 is a deficient number, since it is larger than the sum of its proper divisors (1).

13378543 is an equidigital number, since it uses as much as digits as its factorization.

13378543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 34.

The square root of 13378543 is about 3657.6690664958. The cubic root of 13378543 is about 237.3939278871.

The spelling of 13378543 in words is "thirteen million, three hundred seventy-eight thousand, five hundred forty-three".