57205648 has 20 divisors (see below), whose sum is σ = 111404700. Its totient is φ = 28456064.

The previous prime is 57205639. The next prime is 57205657. The reversal of 57205648 is 84650275.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (57205639) and next prime (57205657).

It can be written as a sum of positive squares in 2 ways, for example, as 40297104 + 16908544 = 6348^2 + 4112^2 .

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, 5923 + ... + 12226.

It is an arithmetic number, because the mean of its divisors is an integer number (5570235).

Almost surely, 2^57205648 is an apocalyptic number.

It is an amenable number.

57205648 is a deficient number, since it is larger than the sum of its proper divisors (54199052).

57205648 is a wasteful number, since it uses less digits than its factorization.

57205648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18354 (or 18348 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 37.

The square root of 57205648 is about 7563.4415446938. The cubic root of 57205648 is about 385.3123860321.

The spelling of 57205648 in words is "fifty-seven million, two hundred five thousand, six hundred forty-eight".