13453543 has 4 divisors (see below), whose sum is σ = 13577080. Its totient is φ = 13330008.

The previous prime is 13453541. The next prime is 13453547. The reversal of 13453543 is 34535431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34535431 = 7 ⋅4933633.

It is a cyclic number.

It is not a de Polignac number, because 13453543 - 2¹ = 13453541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13453541) 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 in 3 ways as a sum of consecutive naturals, for example, 61605 + ... + 61822.

It is an arithmetic number, because the mean of its divisors is an integer number (3394270).

Almost surely, 2^13453543 is an apocalyptic number.

13453543 is a deficient number, since it is larger than the sum of its proper divisors (123537).

13453543 is a wasteful number, since it uses less digits than its factorization.

13453543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123536.

The product of its digits is 10800, while the sum is 28.

The square root of 13453543 is about 3667.9071689453. The cubic root of 13453543 is about 237.8367109594.

Adding to 13453543 its reverse (34535431), we get a palindrome (47988974).

The spelling of 13453543 in words is "thirteen million, four hundred fifty-three thousand, five hundred forty-three".