5255817598243 has 2 divisors, whose sum is σ = 5255817598244. Its totient is φ = 5255817598242.

The previous prime is 5255817598201. The next prime is 5255817598259. The reversal of 5255817598243 is 3428957185525.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5255817598243 is a prime.

It is not a weakly prime, because it can be changed into another prime (5255817598943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2627908799121 + 2627908799122.

It is an arithmetic number, because the mean of its divisors is an integer number (2627908799122).

Almost surely, 2^{5255817598243} is an apocalyptic number.

5255817598243 is a deficient number, since it is larger than the sum of its proper divisors (1).

5255817598243 is an equidigital number, since it uses as much as digits as its factorization.

5255817598243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960000, while the sum is 64.

The spelling of 5255817598243 in words is "five trillion, two hundred fifty-five billion, eight hundred seventeen million, five hundred ninety-eight thousand, two hundred forty-three".