171381545 has 8 divisors (see below), whose sum is σ = 206478720. Its totient is φ = 136558000.

The previous prime is 171381481. The next prime is 171381557. The reversal of 171381545 is 545183171.

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

It is not a de Polignac number, because 171381545 - 2⁶ = 171381481 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67025 + ... + 69534.

It is an arithmetic number, because the mean of its divisors is an integer number (25809840).

Almost surely, 2^171381545 is an apocalyptic number.

It is an amenable number.

171381545 is a deficient number, since it is larger than the sum of its proper divisors (35097175).

171381545 is a wasteful number, since it uses less digits than its factorization.

171381545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136815.

The product of its digits is 16800, while the sum is 35.

The square root of 171381545 is about 13091.2774395779. The cubic root of 171381545 is about 555.4624233588.

The spelling of 171381545 in words is "one hundred seventy-one million, three hundred eighty-one thousand, five hundred forty-five".