57202213 has 2 divisors, whose sum is σ = 57202214. Its totient is φ = 57202212.

The previous prime is 57202177. The next prime is 57202231. The reversal of 57202213 is 31220275.

57202213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (57202231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50452609 + 6749604 = 7103^2 + 2598^2 .

It is a cyclic number.

It is not a de Polignac number, because 57202213 - 2¹³ = 57194021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57202283) 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 as a sum of consecutive naturals, namely, 28601106 + 28601107.

It is an arithmetic number, because the mean of its divisors is an integer number (28601107).

Almost surely, 2^57202213 is an apocalyptic number.

It is an amenable number.

57202213 is a deficient number, since it is larger than the sum of its proper divisors (1).

57202213 is an equidigital number, since it uses as much as digits as its factorization.

57202213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 57202213 is about 7563.2144621186. The cubic root of 57202213 is about 385.3046736552.

Adding to 57202213 its reverse (31220275), we get a palindrome (88422488).

The spelling of 57202213 in words is "fifty-seven million, two hundred two thousand, two hundred thirteen".