80171571 has 8 divisors (see below), whose sum is σ = 107876560. Its totient is φ = 52957152.

The previous prime is 80171551. The next prime is 80171587. The reversal of 80171571 is 17517108.

It is a happy number.

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

It is not a de Polignac number, because 80171571 - 2⁹ = 80171059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80171551) by changing a digit.

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, 122260 + ... + 122913.

It is an arithmetic number, because the mean of its divisors is an integer number (13484570).

Almost surely, 2^80171571 is an apocalyptic number.

80171571 is a deficient number, since it is larger than the sum of its proper divisors (27704989).

80171571 is a wasteful number, since it uses less digits than its factorization.

80171571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245285.

The product of its (nonzero) digits is 1960, while the sum is 30.

The square root of 80171571 is about 8953.8578836164. The cubic root of 80171571 is about 431.1947501578.

Adding to 80171571 its reverse (17517108), we get a palindrome (97688679).

The spelling of 80171571 in words is "eighty million, one hundred seventy-one thousand, five hundred seventy-one".