57607321 has 4 divisors (see below), whose sum is σ = 57831732. Its totient is φ = 57382912.

The previous prime is 57607313. The next prime is 57607349. The reversal of 57607321 is 12370675.

57607321 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.

It can be written as a sum of positive squares in 2 ways, for example, as 56475225 + 1132096 = 7515^2 + 1064^2 .

It is a cyclic number.

It is not a de Polignac number, because 57607321 - 2³ = 57607313 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57607301) 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, 111820 + ... + 112333.

It is an arithmetic number, because the mean of its divisors is an integer number (14457933).

Almost surely, 2^57607321 is an apocalyptic number.

It is an amenable number.

57607321 is a deficient number, since it is larger than the sum of its proper divisors (224411).

57607321 is a wasteful number, since it uses less digits than its factorization.

57607321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224410.

The product of its (nonzero) digits is 8820, while the sum is 31.

The square root of 57607321 is about 7589.9486823035. The cubic root of 57607321 is about 386.2121150653.

Adding to 57607321 its reverse (12370675), we get a palindrome (69977996).

The spelling of 57607321 in words is "fifty-seven million, six hundred seven thousand, three hundred twenty-one".