57330820 has 24 divisors (see below), whose sum is σ = 120720600. Its totient is φ = 22870272.

The previous prime is 57330799. The next prime is 57330821. The reversal of 57330820 is 2803375.

It can be written as a sum of positive squares in 4 ways, for example, as 10188864 + 47141956 = 3192^2 + 6866^2 .

It is not an unprimeable number, because it can be changed into a prime (57330821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4096 + ... + 11464.

It is an arithmetic number, because the mean of its divisors is an integer number (5030025).

Almost surely, 2^57330820 is an apocalyptic number.

It is an amenable number.

57330820 is an abundant number, since it is smaller than the sum of its proper divisors (63389780).

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

57330820 is a wasteful number, since it uses less digits than its factorization.

57330820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7767 (or 7765 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 57330820 is about 7571.7118275856. The cubic root of 57330820 is about 385.5932160357.

The spelling of 57330820 in words is "fifty-seven million, three hundred thirty thousand, eight hundred twenty".