53571720700217 has 2 divisors, whose sum is σ = 53571720700218. Its totient is φ = 53571720700216.

The previous prime is 53571720700187. The next prime is 53571720700247. The reversal of 53571720700217 is 71200702717535.

It is a balanced prime because it is at equal distance from previous prime (53571720700187) and next prime (53571720700247).

It can be written as a sum of positive squares in only one way, i.e., 51973559514361 + 1598161185856 = 7209269^2 + 1264184^2 .

It is a cyclic number.

It is not a de Polignac number, because 53571720700217 - 2⁴² = 49173674189113 is a prime.

It is not a weakly prime, because it can be changed into another prime (53571720700247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26785860350108 + 26785860350109.

It is an arithmetic number, because the mean of its divisors is an integer number (26785860350109).

Almost surely, 2^{53571720700217} is an apocalyptic number.

It is an amenable number.

53571720700217 is a deficient number, since it is larger than the sum of its proper divisors (1).

53571720700217 is an equidigital number, since it uses as much as digits as its factorization.

53571720700217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720300, while the sum is 47.

The spelling of 53571720700217 in words is "fifty-three trillion, five hundred seventy-one billion, seven hundred twenty million, seven hundred thousand, two hundred seventeen".