57284321 has 8 divisors (see below), whose sum is σ = 57737064. Its totient is φ = 56833920.

The previous prime is 57284303. The next prime is 57284327. The reversal of 57284321 is 12348275.

57284321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 70225 + 57214096 = 265^2 + 7564^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 57284321 - 2¹⁸ = 57022177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57284327) by changing a digit.

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, 124031 + ... + 124491.

It is an arithmetic number, because the mean of its divisors is an integer number (7217133).

Almost surely, 2^57284321 is an apocalyptic number.

It is an amenable number.

57284321 is a deficient number, since it is larger than the sum of its proper divisors (452743).

57284321 is a wasteful number, since it uses less digits than its factorization.

57284321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1171.

The product of its digits is 13440, while the sum is 32.

The square root of 57284321 is about 7568.6406309191. The cubic root of 57284321 is about 385.4889408336.

The spelling of 57284321 in words is "fifty-seven million, two hundred eighty-four thousand, three hundred twenty-one".