172711543 has 2 divisors, whose sum is σ = 172711544. Its totient is φ = 172711542.

The previous prime is 172711541. The next prime is 172711549. The reversal of 172711543 is 345117271.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 172711543 - 2¹ = 172711541 is a prime.

Together with 172711541, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172711541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86355771 + 86355772.

It is an arithmetic number, because the mean of its divisors is an integer number (86355772).

Almost surely, 2^172711543 is an apocalyptic number.

172711543 is a deficient number, since it is larger than the sum of its proper divisors (1).

172711543 is an equidigital number, since it uses as much as digits as its factorization.

172711543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5880, while the sum is 31.

The square root of 172711543 is about 13141.9763734379. The cubic root of 172711543 is about 556.8956019079.

The spelling of 172711543 in words is "one hundred seventy-two million, seven hundred eleven thousand, five hundred forty-three".