57212797 has 2 divisors, whose sum is σ = 57212798. Its totient is φ = 57212796.

The previous prime is 57212789. The next prime is 57212821. The reversal of 57212797 is 79721275.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51351556 + 5861241 = 7166^2 + 2421^2 .

It is a cyclic number.

It is not a de Polignac number, because 57212797 - 2³ = 57212789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57212717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28606398 + 28606399.

It is an arithmetic number, because the mean of its divisors is an integer number (28606399).

Almost surely, 2^57212797 is an apocalyptic number.

It is an amenable number.

57212797 is a deficient number, since it is larger than the sum of its proper divisors (1).

57212797 is an equidigital number, since it uses as much as digits as its factorization.

57212797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 61740, while the sum is 40.

The square root of 57212797 is about 7563.9141322466. The cubic root of 57212797 is about 385.3284362159.

The spelling of 57212797 in words is "fifty-seven million, two hundred twelve thousand, seven hundred ninety-seven".