172115183 has 2 divisors, whose sum is σ = 172115184. Its totient is φ = 172115182.

The previous prime is 172115149. The next prime is 172115227. The reversal of 172115183 is 381511271.

It is a weak prime.

It is an emirp because it is prime and its reverse (381511271) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 172115183 - 2¹⁸ = 171853039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172115143) 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, 86057591 + 86057592.

It is an arithmetic number, because the mean of its divisors is an integer number (86057592).

Almost surely, 2^172115183 is an apocalyptic number.

172115183 is a deficient number, since it is larger than the sum of its proper divisors (1).

172115183 is an equidigital number, since it uses as much as digits as its factorization.

172115183 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1680, while the sum is 29.

The square root of 172115183 is about 13119.2676243760. The cubic root of 172115183 is about 556.2538898352.

The spelling of 172115183 in words is "one hundred seventy-two million, one hundred fifteen thousand, one hundred eighty-three".