57171712 has 72 divisors (see below), whose sum is σ = 126196560. Its totient is φ = 25681920.

The previous prime is 57171691. The next prime is 57171727. The reversal of 57171712 is 21717175.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136239 + ... + 136657.

It is an arithmetic number, because the mean of its divisors is an integer number (1752730).

Almost surely, 2^57171712 is an apocalyptic number.

57171712 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57171712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63098280).

57171712 is an abundant number, since it is smaller than the sum of its proper divisors (69024848).

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

57171712 is a wasteful number, since it uses less digits than its factorization.

57171712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489 (or 475 counting only the distinct ones).

The product of its digits is 3430, while the sum is 31.

The square root of 57171712 is about 7561.1977887105. The cubic root of 57171712 is about 385.2361782442.

Adding to 57171712 its reverse (21717175), we get a palindrome (78888887).

It can be divided in two parts, 5 and 7171712, that added together give a palindrome (7171717).

The spelling of 57171712 in words is "fifty-seven million, one hundred seventy-one thousand, seven hundred twelve".