797905553 has 2 divisors, whose sum is σ = 797905554. Its totient is φ = 797905552.

The previous prime is 797905531. The next prime is 797905601. The reversal of 797905553 is 355509797.

797905553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 797893009 + 12544 = 28247^2 + 112^2 .

It is a cyclic number.

It is not a de Polignac number, because 797905553 - 2¹⁰ = 797904529 is a prime.

It is not a weakly prime, because it can be changed into another prime (797905853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 398952776 + 398952777.

It is an arithmetic number, because the mean of its divisors is an integer number (398952777).

Almost surely, 2^797905553 is an apocalyptic number.

It is an amenable number.

797905553 is a deficient number, since it is larger than the sum of its proper divisors (1).

797905553 is an equidigital number, since it uses as much as digits as its factorization.

797905553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1488375, while the sum is 50.

The square root of 797905553 is about 28247.2220404060. Note that the first 3 decimals coincide. The cubic root of 797905553 is about 927.5069285524.

The spelling of 797905553 in words is "seven hundred ninety-seven million, nine hundred five thousand, five hundred fifty-three".