57445312 has 56 divisors (see below), whose sum is σ = 124047504. Its totient is φ = 26284032.

The previous prime is 57445309. The next prime is 57445439. The reversal of 57445312 is 21354475.

It is a congruent number.

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, 39543 + ... + 40969.

It is an arithmetic number, because the mean of its divisors is an integer number (2215134).

Almost surely, 2^57445312 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 57445312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62023752).

57445312 is an abundant number, since it is smaller than the sum of its proper divisors (66602192).

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

57445312 is a wasteful number, since it uses less digits than its factorization.

57445312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1493 (or 1483 counting only the distinct ones).

The product of its digits is 16800, while the sum is 31.

The square root of 57445312 is about 7579.2685662932. The cubic root of 57445312 is about 385.8497271818.

Adding to 57445312 its reverse (21354475), we get a palindrome (78799787).

The spelling of 57445312 in words is "fifty-seven million, four hundred forty-five thousand, three hundred twelve".