57000520 has 32 divisors (see below), whose sum is σ = 128976120. Its totient is φ = 22671360.

The previous prime is 57000511. The next prime is 57000523. The reversal of 57000520 is 2500075.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 11329956 + 45670564 = 3366^2 + 6758^2 .

It is not an unprimeable number, because it can be changed into a prime (57000523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3304 + ... + 11176.

Almost surely, 2^57000520 is an apocalyptic number.

It is an amenable number.

57000520 is an abundant number, since it is smaller than the sum of its proper divisors (71975600).

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

57000520 is a wasteful number, since it uses less digits than its factorization.

57000520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8065 (or 8061 counting only the distinct ones).

The product of its (nonzero) digits is 350, while the sum is 19.

The square root of 57000520 is about 7549.8688730335. The cubic root of 57000520 is about 384.8512834286.

Adding to 57000520 its reverse (2500075), we get a palindrome (59500595).

It can be divided in two parts, 570005 and 20, that added together give a square (570025 = 755²).

The spelling of 57000520 in words is "fifty-seven million, five hundred twenty", and thus it is an aban number.