1073543 has 4 divisors (see below), whose sum is σ = 1075680. Its totient is φ = 1071408.

The previous prime is 1073537. The next prime is 1073563. The reversal of 1073543 is 3453701.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3453701 = 47 ⋅73483.

It is a cyclic number.

It is not a de Polignac number, because 1073543 - 2²⁰ = 24967 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 (1073563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146 + ... + 1472.

It is an arithmetic number, because the mean of its divisors is an integer number (268920).

2^1073543 is an apocalyptic number.

1073543 is a deficient number, since it is larger than the sum of its proper divisors (2137).

1073543 is an equidigital number, since it uses as much as digits as its factorization.

1073543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2136.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 1073543 is about 1036.1192016366. The cubic root of 1073543 is about 102.3936791651.

The spelling of 1073543 in words is "one million, seventy-three thousand, five hundred forty-three".