57055725 has 48 divisors (see below), whose sum is σ = 105618240. Its totient is φ = 30196800.

The previous prime is 57055721. The next prime is 57055751. The reversal of 57055725 is 52755075.

It is not a de Polignac number, because 57055725 - 2² = 57055721 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 57055725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57055721) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 121942 + ... + 122408.

It is an arithmetic number, because the mean of its divisors is an integer number (2200380).

Almost surely, 2^57055725 is an apocalyptic number.

It is an amenable number.

57055725 is a deficient number, since it is larger than the sum of its proper divisors (48562515).

57055725 is a wasteful number, since it uses less digits than its factorization.

57055725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667 (or 656 counting only the distinct ones).

The product of its (nonzero) digits is 61250, while the sum is 36.

The square root of 57055725 is about 7553.5240120092. The cubic root of 57055725 is about 384.9754861549.

The spelling of 57055725 in words is "fifty-seven million, fifty-five thousand, seven hundred twenty-five".