57132217 has 2 divisors, whose sum is σ = 57132218. Its totient is φ = 57132216.

The previous prime is 57132199. The next prime is 57132227. The reversal of 57132217 is 71223175.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42302016 + 14830201 = 6504^2 + 3851^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57132217 is a prime.

It is not a weakly prime, because it can be changed into another prime (57132227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28566108 + 28566109.

It is an arithmetic number, because the mean of its divisors is an integer number (28566109).

Almost surely, 2^57132217 is an apocalyptic number.

It is an amenable number.

57132217 is a deficient number, since it is larger than the sum of its proper divisors (1).

57132217 is an equidigital number, since it uses as much as digits as its factorization.

57132217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2940, while the sum is 28.

The square root of 57132217 is about 7558.5856481223. The cubic root of 57132217 is about 385.1474490037.

The spelling of 57132217 in words is "fifty-seven million, one hundred thirty-two thousand, two hundred seventeen".