57005321 has 4 divisors (see below), whose sum is σ = 57035472. Its totient is φ = 56975172.

The previous prime is 57005317. The next prime is 57005323. The reversal of 57005321 is 12350075.

57005321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 57005321 - 2² = 57005317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57005323) 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 3 ways as a sum of consecutive naturals, for example, 12035 + ... + 16088.

It is an arithmetic number, because the mean of its divisors is an integer number (14258868).

Almost surely, 2^57005321 is an apocalyptic number.

It is an amenable number.

57005321 is a deficient number, since it is larger than the sum of its proper divisors (30151).

57005321 is a wasteful number, since it uses less digits than its factorization.

57005321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30150.

The product of its (nonzero) digits is 1050, while the sum is 23.

The square root of 57005321 is about 7550.1868188807. The cubic root of 57005321 is about 384.8620881203.

Adding to 57005321 its reverse (12350075), we get a palindrome (69355396).

The spelling of 57005321 in words is "fifty-seven million, five thousand, three hundred twenty-one".