172191359 has 2 divisors, whose sum is σ = 172191360. Its totient is φ = 172191358.

The previous prime is 172191353. The next prime is 172191361. The reversal of 172191359 is 953191271.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 172191359 - 2⁴ = 172191343 is a prime.

It is a super-2 number, since 2×172191359² = 59299728228533762, which contains 22 as substring.

Together with 172191361, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172191353) 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, 86095679 + 86095680.

It is an arithmetic number, because the mean of its divisors is an integer number (86095680).

Almost surely, 2^172191359 is an apocalyptic number.

172191359 is a deficient number, since it is larger than the sum of its proper divisors (1).

172191359 is an equidigital number, since it uses as much as digits as its factorization.

172191359 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17010, while the sum is 38.

The square root of 172191359 is about 13122.1705140575. The cubic root of 172191359 is about 556.3359413734.

The spelling of 172191359 in words is "one hundred seventy-two million, one hundred ninety-one thousand, three hundred fifty-nine".