171542234522 has 4 divisors (see below), whose sum is σ = 257313351786. Its totient is φ = 85771117260.

The previous prime is 171542234497. The next prime is 171542234527. The reversal of 171542234522 is 225432245171.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 115818383041 + 55723851481 = 340321^2 + 236059^2 .

It is not an unprimeable number, because it can be changed into a prime (171542234527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42885558629 + ... + 42885558632.

Almost surely, 2^171542234522 is an apocalyptic number.

171542234522 is a deficient number, since it is larger than the sum of its proper divisors (85771117264).

171542234522 is an equidigital number, since it uses as much as digits as its factorization.

171542234522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85771117263.

The product of its digits is 134400, while the sum is 38.

Adding to 171542234522 its reverse (225432245171), we get a palindrome (396974479693).

The spelling of 171542234522 in words is "one hundred seventy-one billion, five hundred forty-two million, two hundred thirty-four thousand, five hundred twenty-two".