57171270 has 64 divisors (see below), whose sum is σ = 150958080. Its totient is φ = 13769088.

The previous prime is 57171269. The next prime is 57171271. The reversal of 57171270 is 7217175.

57171270 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (57171269) and next prime (57171271).

It is a super-2 number, since 2×57171270² = 6537108226825800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57171271) 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 31 ways as a sum of consecutive naturals, for example, 16771 + ... + 19889.

It is an arithmetic number, because the mean of its divisors is an integer number (2358720).

Almost surely, 2^57171270 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57171270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75479040).

57171270 is an abundant number, since it is smaller than the sum of its proper divisors (93786810).

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

57171270 is a wasteful number, since it uses less digits than its factorization.

57171270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3189.

The product of its (nonzero) digits is 3430, while the sum is 30.

The square root of 57171270 is about 7561.1685604806. The cubic root of 57171270 is about 385.2351854757.

The spelling of 57171270 in words is "fifty-seven million, one hundred seventy-one thousand, two hundred seventy".