57171665531 has 8 divisors (see below), whose sum is σ = 58512463680. Its totient is φ = 55831377672.

The previous prime is 57171665519. The next prime is 57171665539. The reversal of 57171665531 is 13556617175.

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 57171665531 - 2¹⁰ = 57171664507 is a prime.

It is a super-2 number, since 2×57171665531² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57171665539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104000 + ... + 353778.

It is an arithmetic number, because the mean of its divisors is an integer number (7314057960).

Almost surely, 2^57171665531 is an apocalyptic number.

57171665531 is a deficient number, since it is larger than the sum of its proper divisors (1340798149).

57171665531 is a wasteful number, since it uses less digits than its factorization.

57171665531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255145.

The product of its digits is 661500, while the sum is 47.

The spelling of 57171665531 in words is "fifty-seven billion, one hundred seventy-one million, six hundred sixty-five thousand, five hundred thirty-one".