57053728 has 12 divisors (see below), whose sum is σ = 112324590. Its totient is φ = 28526848.

The previous prime is 57053693. The next prime is 57053729. The reversal of 57053728 is 82735075.

It can be written as a sum of positive squares in only one way, i.e., 54582544 + 2471184 = 7388^2 + 1572^2 .

It is not an unprimeable number, because it can be changed into a prime (57053729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 891433 + ... + 891496.

Almost surely, 2^57053728 is an apocalyptic number.

It is an amenable number.

57053728 is a deficient number, since it is larger than the sum of its proper divisors (55270862).

57053728 is a wasteful number, since it uses less digits than its factorization.

57053728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1782939 (or 1782931 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 37.

The square root of 57053728 is about 7553.3918208974. The cubic root of 57053728 is about 384.9709946102.

The spelling of 57053728 in words is "fifty-seven million, fifty-three thousand, seven hundred twenty-eight".