57221635297 has 2 divisors, whose sum is σ = 57221635298. Its totient is φ = 57221635296.

The previous prime is 57221635243. The next prime is 57221635307. The reversal of 57221635297 is 79253612275.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30717469696 + 26504165601 = 175264^2 + 162801^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57221635297 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57221635297.

It is not a weakly prime, because it can be changed into another prime (57221635397) 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, 28610817648 + 28610817649.

It is an arithmetic number, because the mean of its divisors is an integer number (28610817649).

Almost surely, 2^57221635297 is an apocalyptic number.

It is an amenable number.

57221635297 is a deficient number, since it is larger than the sum of its proper divisors (1).

57221635297 is an equidigital number, since it uses as much as digits as its factorization.

57221635297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1587600, while the sum is 49.

The spelling of 57221635297 in words is "fifty-seven billion, two hundred twenty-one million, six hundred thirty-five thousand, two hundred ninety-seven".