57145712 has 20 divisors (see below), whose sum is σ = 119237160. Its totient is φ = 26374848.

The previous prime is 57145709. The next prime is 57145729. The reversal of 57145712 is 21754175.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137162 + ... + 137577.

It is an arithmetic number, because the mean of its divisors is an integer number (5961858).

Almost surely, 2^57145712 is an apocalyptic number.

57145712 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

57145712 is an abundant number, since it is smaller than the sum of its proper divisors (62091448).

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

57145712 is a wasteful number, since it uses less digits than its factorization.

57145712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274760 (or 274754 counting only the distinct ones).

The product of its digits is 9800, while the sum is 32.

The square root of 57145712 is about 7559.4782888768. The cubic root of 57145712 is about 385.1777713910.

Adding to 57145712 its reverse (21754175), we get a palindrome (78899887).

The spelling of 57145712 in words is "fifty-seven million, one hundred forty-five thousand, seven hundred twelve".