797226557 has 2 divisors, whose sum is σ = 797226558. Its totient is φ = 797226556.

The previous prime is 797226541. The next prime is 797226581. The reversal of 797226557 is 755622797.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 753282916 + 43943641 = 27446^2 + 6629^2 .

It is a cyclic number.

It is not a de Polignac number, because 797226557 - 2⁴ = 797226541 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (797226257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 398613278 + 398613279.

It is an arithmetic number, because the mean of its divisors is an integer number (398613279).

Almost surely, 2^797226557 is an apocalyptic number.

It is an amenable number.

797226557 is a deficient number, since it is larger than the sum of its proper divisors (1).

797226557 is an equidigital number, since it uses as much as digits as its factorization.

797226557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1852200, while the sum is 50.

The square root of 797226557 is about 28235.2006722106. The cubic root of 797226557 is about 927.2437594690.

The spelling of 797226557 in words is "seven hundred ninety-seven million, two hundred twenty-six thousand, five hundred fifty-seven".