171606542 has 24 divisors (see below), whose sum is σ = 273602280. Its totient is φ = 80696880.

The previous prime is 171606521. The next prime is 171606559. The reversal of 171606542 is 245606171.

It is a junction number, because it is equal to n+sod(n) for n = 171606499 and 171606508.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63209 + ... + 65867.

It is an arithmetic number, because the mean of its divisors is an integer number (11400095).

Almost surely, 2^171606542 is an apocalyptic number.

171606542 is a deficient number, since it is larger than the sum of its proper divisors (101995738).

171606542 is a wasteful number, since it uses less digits than its factorization.

171606542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2768 (or 2745 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 171606542 is about 13099.8680146023. The cubic root of 171606542 is about 555.7053953132.

The spelling of 171606542 in words is "one hundred seventy-one million, six hundred six thousand, five hundred forty-two".