57210020 has 24 divisors (see below), whose sum is σ = 137304384. Its totient is φ = 19614816.

The previous prime is 57210017. The next prime is 57210031. The reversal of 57210020 is 2001275.

57210020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204182 + ... + 204461.

It is an arithmetic number, because the mean of its divisors is an integer number (5721016).

Almost surely, 2^57210020 is an apocalyptic number.

It is an amenable number.

57210020 is an abundant number, since it is smaller than the sum of its proper divisors (80094364).

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

57210020 is a wasteful number, since it uses less digits than its factorization.

57210020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408659 (or 408657 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 17.

The square root of 57210020 is about 7563.7305610393. The cubic root of 57210020 is about 385.3222017460.

Adding to 57210020 its reverse (2001275), we get a palindrome (59211295).

The spelling of 57210020 in words is "fifty-seven million, two hundred ten thousand, twenty".