172141111 has 2 divisors, whose sum is σ = 172141112. Its totient is φ = 172141110.

The previous prime is 172141093. The next prime is 172141117. The reversal of 172141111 is 111141271.

It is a strong prime.

It is an emirp because it is prime and its reverse (111141271) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 172141111 - 2²⁷ = 37923383 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 (172141117) 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, 86070555 + 86070556.

It is an arithmetic number, because the mean of its divisors is an integer number (86070556).

Almost surely, 2^172141111 is an apocalyptic number.

172141111 is a deficient number, since it is larger than the sum of its proper divisors (1).

172141111 is an equidigital number, since it uses as much as digits as its factorization.

172141111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56, while the sum is 19.

The square root of 172141111 is about 13120.2557520804. The cubic root of 172141111 is about 556.2818204075.

Adding to 172141111 its reverse (111141271), we get a palindrome (283282382).

The spelling of 172141111 in words is "one hundred seventy-two million, one hundred forty-one thousand, one hundred eleven".