5257173028321 has 2 divisors, whose sum is σ = 5257173028322. Its totient is φ = 5257173028320.

The previous prime is 5257173028319. The next prime is 5257173028361. The reversal of 5257173028321 is 1238203717525.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4859092792225 + 398080236096 = 2204335^2 + 630936^2 .

It is a cyclic number.

It is not a de Polignac number, because 5257173028321 - 2¹ = 5257173028319 is a prime.

Together with 5257173028319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (5257173028361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2628586514160 + 2628586514161.

It is an arithmetic number, because the mean of its divisors is an integer number (2628586514161).

Almost surely, 2^{5257173028321} is an apocalyptic number.

It is an amenable number.

5257173028321 is a deficient number, since it is larger than the sum of its proper divisors (1).

5257173028321 is an equidigital number, since it uses as much as digits as its factorization.

5257173028321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 705600, while the sum is 46.

The spelling of 5257173028321 in words is "five trillion, two hundred fifty-seven billion, one hundred seventy-three million, twenty-eight thousand, three hundred twenty-one".