797441521 has 2 divisors, whose sum is σ = 797441522. Its totient is φ = 797441520.

The previous prime is 797441497. The next prime is 797441543. The reversal of 797441521 is 125144797.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 797441121 + 400 = 28239^2 + 20^2 .

It is an emirp because it is prime and its reverse (125144797) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 797441521 - 2¹¹ = 797439473 is a prime.

It is not a weakly prime, because it can be changed into another prime (797441921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 398720760 + 398720761.

It is an arithmetic number, because the mean of its divisors is an integer number (398720761).

Almost surely, 2^797441521 is an apocalyptic number.

It is an amenable number.

797441521 is a deficient number, since it is larger than the sum of its proper divisors (1).

797441521 is an equidigital number, since it uses as much as digits as its factorization.

797441521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 70560, while the sum is 40.

The square root of 797441521 is about 28239.0070824029. The cubic root of 797441521 is about 927.3270925831.

The spelling of 797441521 in words is "seven hundred ninety-seven million, four hundred forty-one thousand, five hundred twenty-one".