73073543 has 4 divisors (see below), whose sum is σ = 73130928. Its totient is φ = 73016160.

The previous prime is 73073527. The next prime is 73073549. The reversal of 73073543 is 34537037.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34537037 = 283 ⋅122039.

It is a cyclic number.

It is not a de Polignac number, because 73073543 - 2⁴ = 73073527 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 (73073549) 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, 26738 + ... + 29343.

It is an arithmetic number, because the mean of its divisors is an integer number (18282732).

Almost surely, 2^73073543 is an apocalyptic number.

73073543 is a deficient number, since it is larger than the sum of its proper divisors (57385).

73073543 is a wasteful number, since it uses less digits than its factorization.

73073543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57384.

The product of its (nonzero) digits is 26460, while the sum is 32.

The square root of 73073543 is about 8548.3064404594. The cubic root of 73073543 is about 418.0742200876.

The spelling of 73073543 in words is "seventy-three million, seventy-three thousand, five hundred forty-three".