798521 has 2 divisors, whose sum is σ = 798522. Its totient is φ = 798520.

The previous prime is 798517. The next prime is 798527. The reversal of 798521 is 125897.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 511225 + 287296 = 715^2 + 536^2 .

It is an emirp because it is prime and its reverse (125897) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 798521 - 2² = 798517 is a prime.

It is not a weakly prime, because it can be changed into another prime (798527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 399260 + 399261.

It is an arithmetic number, because the mean of its divisors is an integer number (399261).

2⁷⁹⁸⁵²¹ is an apocalyptic number.

It is an amenable number.

798521 is a deficient number, since it is larger than the sum of its proper divisors (1).

798521 is an equidigital number, since it uses as much as digits as its factorization.

798521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 32.

The square root of 798521 is about 893.6000223814. The cubic root of 798521 is about 92.7745337995.

The spelling of 798521 in words is "seven hundred ninety-eight thousand, five hundred twenty-one".