171538043 has 8 divisors (see below), whose sum is σ = 173066880. Its totient is φ = 170015040.

The previous prime is 171538033. The next prime is 171538049. The reversal of 171538043 is 340835171.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 171538043 - 2¹⁶ = 171472507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (171538049) 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 in 7 ways as a sum of consecutive naturals, for example, 74063 + ... + 76343.

It is an arithmetic number, because the mean of its divisors is an integer number (21633360).

Almost surely, 2^171538043 is an apocalyptic number.

171538043 is a deficient number, since it is larger than the sum of its proper divisors (1528837).

171538043 is a wasteful number, since it uses less digits than its factorization.

171538043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2917.

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

The square root of 171538043 is about 13097.2532616576. The cubic root of 171538043 is about 555.6314464429.

The spelling of 171538043 in words is "one hundred seventy-one million, five hundred thirty-eight thousand, forty-three".