171157422 has 16 divisors (see below), whose sum is σ = 342473040. Its totient is φ = 57026112.

The previous prime is 171157379. The next prime is 171157429. The reversal of 171157422 is 224751171.

171157422 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 171157422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171157429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11148 + ... + 21600.

It is an arithmetic number, because the mean of its divisors is an integer number (21404565).

Almost surely, 2^171157422 is an apocalyptic number.

171157422 is an abundant number, since it is smaller than the sum of its proper divisors (171315618).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

171157422 is a wasteful number, since it uses less digits than its factorization.

171157422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13187.

The product of its digits is 3920, while the sum is 30.

The square root of 171157422 is about 13082.7146265597. The cubic root of 171157422 is about 555.2201837174.

The spelling of 171157422 in words is "one hundred seventy-one million, one hundred fifty-seven thousand, four hundred twenty-two".