13161543 has 32 divisors (see below), whose sum is σ = 19284480. Its totient is φ = 7962240.

The previous prime is 13161527. The next prime is 13161583. The reversal of 13161543 is 34516131.

It is not a de Polignac number, because 13161543 - 2⁴ = 13161527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13161503) 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 in 31 ways as a sum of consecutive naturals, for example, 215733 + ... + 215793.

It is an arithmetic number, because the mean of its divisors is an integer number (602640).

Almost surely, 2^13161543 is an apocalyptic number.

13161543 is a deficient number, since it is larger than the sum of its proper divisors (6122937).

13161543 is a wasteful number, since it uses less digits than its factorization.

13161543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199.

The product of its digits is 1080, while the sum is 24.

The square root of 13161543 is about 3627.8840940692. The cubic root of 13161543 is about 236.1034151289.

Adding to 13161543 its reverse (34516131), we get a palindrome (47677674).

The spelling of 13161543 in words is "thirteen million, one hundred sixty-one thousand, five hundred forty-three".