57070217 has 2 divisors, whose sum is σ = 57070218. Its totient is φ = 57070216.

The previous prime is 57070213. The next prime is 57070253. The reversal of 57070217 is 71207075.

57070217 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., 37258816 + 19811401 = 6104^2 + 4451^2 .

It is a cyclic number.

It is not a de Polignac number, because 57070217 - 2² = 57070213 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57070217.

It is not a weakly prime, because it can be changed into another prime (57070213) 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, 28535108 + 28535109.

It is an arithmetic number, because the mean of its divisors is an integer number (28535109).

Almost surely, 2^57070217 is an apocalyptic number.

It is an amenable number.

57070217 is a deficient number, since it is larger than the sum of its proper divisors (1).

57070217 is an equidigital number, since it uses as much as digits as its factorization.

57070217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3430, while the sum is 29.

The square root of 57070217 is about 7554.4832384485. The cubic root of 57070217 is about 385.0080776402.

The spelling of 57070217 in words is "fifty-seven million, seventy thousand, two hundred seventeen".