172067543 has 2 divisors, whose sum is σ = 172067544. Its totient is φ = 172067542.

The previous prime is 172067491. The next prime is 172067563. The reversal of 172067543 is 345760271.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 172067543 - 2¹⁶ = 172002007 is a prime.

It is a super-3 number, since 3×172067543³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172067563) 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 as a sum of consecutive naturals, namely, 86033771 + 86033772.

It is an arithmetic number, because the mean of its divisors is an integer number (86033772).

Almost surely, 2^172067543 is an apocalyptic number.

172067543 is a deficient number, since it is larger than the sum of its proper divisors (1).

172067543 is an equidigital number, since it uses as much as digits as its factorization.

172067543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 172067543 is about 13117.4518485871. The cubic root of 172067543 is about 556.2025630043.

The spelling of 172067543 in words is "one hundred seventy-two million, sixty-seven thousand, five hundred forty-three".