57178213 has 2 divisors, whose sum is σ = 57178214. Its totient is φ = 57178212.

The previous prime is 57178211. The next prime is 57178249. The reversal of 57178213 is 31287175.

57178213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54140164 + 3038049 = 7358^2 + 1743^2 .

It is a cyclic number.

It is not a de Polignac number, because 57178213 - 2¹ = 57178211 is a prime.

Together with 57178211, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57178211) 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, 28589106 + 28589107.

It is an arithmetic number, because the mean of its divisors is an integer number (28589107).

Almost surely, 2^57178213 is an apocalyptic number.

It is an amenable number.

57178213 is a deficient number, since it is larger than the sum of its proper divisors (1).

57178213 is an equidigital number, since it uses as much as digits as its factorization.

57178213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11760, while the sum is 34.

The square root of 57178213 is about 7561.6276686967. The cubic root of 57178213 is about 385.2507794364.

The spelling of 57178213 in words is "fifty-seven million, one hundred seventy-eight thousand, two hundred thirteen".