172368543 has 16 divisors (see below), whose sum is σ = 232727040. Its totient is φ = 113468064.

The previous prime is 172368517. The next prime is 172368557. The reversal of 172368543 is 345863271.

It is not a de Polignac number, because 172368543 - 2¹⁰ = 172367519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172368503) 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 15 ways as a sum of consecutive naturals, for example, 154873 + ... + 155981.

It is an arithmetic number, because the mean of its divisors is an integer number (14545440).

Almost surely, 2^172368543 is an apocalyptic number.

172368543 is a deficient number, since it is larger than the sum of its proper divisors (60358497).

172368543 is a wasteful number, since it uses less digits than its factorization.

172368543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1718.

The product of its digits is 120960, while the sum is 39.

The square root of 172368543 is about 13128.9201002977. The cubic root of 172368543 is about 556.5266982087.

The spelling of 172368543 in words is "one hundred seventy-two million, three hundred sixty-eight thousand, five hundred forty-three".