73712543 has 2 divisors, whose sum is σ = 73712544. Its totient is φ = 73712542.

The previous prime is 73712537. The next prime is 73712557. The reversal of 73712543 is 34521737.

It is a weak prime.

It is an emirp because it is prime and its reverse (34521737) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73712543 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73712503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36856271 + 36856272.

It is an arithmetic number, because the mean of its divisors is an integer number (36856272).

Almost surely, 2^73712543 is an apocalyptic number.

73712543 is a deficient number, since it is larger than the sum of its proper divisors (1).

73712543 is an equidigital number, since it uses as much as digits as its factorization.

73712543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17640, while the sum is 32.

The square root of 73712543 is about 8585.6009108274. The cubic root of 73712543 is about 419.2893177848.

The spelling of 73712543 in words is "seventy-three million, seven hundred twelve thousand, five hundred forty-three".