57825857 has 16 divisors (see below), whose sum is σ = 63406800. Its totient is φ = 52512768.

The previous prime is 57825827. The next prime is 57825869. The reversal of 57825857 is 75852875.

It can be written as a sum of positive squares in 8 ways, for example, as 1290496 + 56535361 = 1136^2 + 7519^2 .

It is not a de Polignac number, because 57825857 - 2⁶ = 57825793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57825827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93413 + ... + 94029.

It is an arithmetic number, because the mean of its divisors is an integer number (3962925).

Almost surely, 2^57825857 is an apocalyptic number.

It is an amenable number.

57825857 is a deficient number, since it is larger than the sum of its proper divisors (5580943).

57825857 is a wasteful number, since it uses less digits than its factorization.

57825857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820.

The product of its digits is 784000, while the sum is 47.

The square root of 57825857 is about 7604.3314630545. The cubic root of 57825857 is about 386.6998699027.

The spelling of 57825857 in words is "fifty-seven million, eight hundred twenty-five thousand, eight hundred fifty-seven".