57216713 has 8 divisors (see below), whose sum is σ = 60781608. Its totient is φ = 53673984.

The previous prime is 57216707. The next prime is 57216737. The reversal of 57216713 is 31761275.

57216713 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 11478544 + 45738169 = 3388^2 + 6763^2 .

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 57216713 - 2⁴ = 57216697 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 57216713.

It is not an unprimeable number, because it can be changed into a prime (57216113) 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, 56 + ... + 10697.

It is an arithmetic number, because the mean of its divisors is an integer number (7597701).

Almost surely, 2^57216713 is an apocalyptic number.

It is an amenable number.

57216713 is a deficient number, since it is larger than the sum of its proper divisors (3564895).

57216713 is a wasteful number, since it uses less digits than its factorization.

57216713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11083.

The product of its digits is 8820, while the sum is 32.

The square root of 57216713 is about 7564.1729885031. The cubic root of 57216713 is about 385.3372274410.

Adding to 57216713 its reverse (31761275), we get a palindrome (88977988).

The spelling of 57216713 in words is "fifty-seven million, two hundred sixteen thousand, seven hundred thirteen".