57171648 has 56 divisors (see below), whose sum is σ = 152156160. Its totient is φ = 18945280.

The previous prime is 57171617. The next prime is 57171659. The reversal of 57171648 is 84617175.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35893 + ... + 37451.

Almost surely, 2^57171648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57171648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76078080).

57171648 is an abundant number, since it is smaller than the sum of its proper divisors (94984512).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57171648 is a wasteful number, since it uses less digits than its factorization.

57171648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1765 (or 1755 counting only the distinct ones).

The product of its digits is 47040, while the sum is 39.

The square root of 57171648 is about 7561.1935565756. The cubic root of 57171648 is about 385.2360344952.

The spelling of 57171648 in words is "fifty-seven million, one hundred seventy-one thousand, six hundred forty-eight".