13491543 has 8 divisors (see below), whose sum is σ = 19372528. Its totient is φ = 8302464.

The previous prime is 13491529. The next prime is 13491563. The reversal of 13491543 is 34519431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13491543 - 2¹² = 13487447 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13491543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13491563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172930 + ... + 173007.

It is an arithmetic number, because the mean of its divisors is an integer number (2421566).

Almost surely, 2^13491543 is an apocalyptic number.

13491543 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13491543 is a deficient number, since it is larger than the sum of its proper divisors (5880985).

13491543 is a wasteful number, since it uses less digits than its factorization.

13491543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345953.

The product of its digits is 6480, while the sum is 30.

The square root of 13491543 is about 3673.0835819513. The cubic root of 13491543 is about 238.0604264806.

The spelling of 13491543 in words is "thirteen million, four hundred ninety-one thousand, five hundred forty-three".