820911053 has 2 divisors, whose sum is σ = 820911054. Its totient is φ = 820911052.

The previous prime is 820911029. The next prime is 820911067. The reversal of 820911053 is 350119028.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 787756489 + 33154564 = 28067^2 + 5758^2 .

It is a cyclic number.

It is not a de Polignac number, because 820911053 - 2⁶ = 820910989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (820911083) 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, 410455526 + 410455527.

It is an arithmetic number, because the mean of its divisors is an integer number (410455527).

Almost surely, 2^820911053 is an apocalyptic number.

It is an amenable number.

820911053 is a deficient number, since it is larger than the sum of its proper divisors (1).

820911053 is an equidigital number, since it uses as much as digits as its factorization.

820911053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 820911053 is about 28651.5453858950. The cubic root of 820911053 is about 936.3366749287.

The spelling of 820911053 in words is "eight hundred twenty million, nine hundred eleven thousand, fifty-three".