57522312 has 80 divisors (see below), whose sum is σ = 166725900. Its totient is φ = 18506880.

The previous prime is 57522301. The next prime is 57522319. The reversal of 57522312 is 21322575.

57522312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 52620516 + 4901796 = 7254^2 + 2214^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (57522319) 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 19 ways as a sum of consecutive naturals, for example, 17262 + ... + 20322.

Almost surely, 2^57522312 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 57522312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83362950).

57522312 is an abundant number, since it is smaller than the sum of its proper divisors (109203588).

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

57522312 is a wasteful number, since it uses less digits than its factorization.

57522312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3108 (or 3095 counting only the distinct ones).

The product of its digits is 4200, while the sum is 27.

The square root of 57522312 is about 7584.3465110713. The cubic root of 57522312 is about 386.0220485495.

Adding to 57522312 its reverse (21322575), we get a palindrome (78844887).

The spelling of 57522312 in words is "fifty-seven million, five hundred twenty-two thousand, three hundred twelve".