57506455217 has 2 divisors, whose sum is σ = 57506455218. Its totient is φ = 57506455216.

The previous prime is 57506455121. The next prime is 57506455273. The reversal of 57506455217 is 71255460575.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51656652961 + 5849802256 = 227281^2 + 76484^2 .

It is a cyclic number.

It is not a de Polignac number, because 57506455217 - 2¹⁴ = 57506438833 is a prime.

It is not a weakly prime, because it can be changed into another prime (57506455417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28753227608 + 28753227609.

It is an arithmetic number, because the mean of its divisors is an integer number (28753227609).

Almost surely, 2^57506455217 is an apocalyptic number.

It is an amenable number.

57506455217 is a deficient number, since it is larger than the sum of its proper divisors (1).

57506455217 is an equidigital number, since it uses as much as digits as its factorization.

57506455217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1470000, while the sum is 47.

The spelling of 57506455217 in words is "fifty-seven billion, five hundred six million, four hundred fifty-five thousand, two hundred seventeen".