57722213 has 4 divisors (see below), whose sum is σ = 57904620. Its totient is φ = 57539808.

The previous prime is 57722143. The next prime is 57722233. The reversal of 57722213 is 31222775.

57722213 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 18809569 + 38912644 = 4337^2 + 6238^2 .

It is a cyclic number.

It is not a de Polignac number, because 57722213 - 2⁸ = 57721957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57722233) 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, 90728 + ... + 91361.

It is an arithmetic number, because the mean of its divisors is an integer number (14476155).

Almost surely, 2^57722213 is an apocalyptic number.

It is an amenable number.

57722213 is a deficient number, since it is larger than the sum of its proper divisors (182407).

57722213 is a wasteful number, since it uses less digits than its factorization.

57722213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182406.

The product of its digits is 5880, while the sum is 29.

The square root of 57722213 is about 7597.5136064373. The cubic root of 57722213 is about 386.4686982868.

Adding to 57722213 its reverse (31222775), we get a palindrome (88944988).

The spelling of 57722213 in words is "fifty-seven million, seven hundred twenty-two thousand, two hundred thirteen".