805057061 has 2 divisors, whose sum is σ = 805057062. Its totient is φ = 805057060.

The previous prime is 805057039. The next prime is 805057069. The reversal of 805057061 is 160750508.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 656948161 + 148108900 = 25631^2 + 12170^2 .

It is a cyclic number.

It is not a de Polignac number, because 805057061 - 2⁶ = 805056997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (805057069) 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, 402528530 + 402528531.

It is an arithmetic number, because the mean of its divisors is an integer number (402528531).

Almost surely, 2^805057061 is an apocalyptic number.

It is an amenable number.

805057061 is a deficient number, since it is larger than the sum of its proper divisors (1).

805057061 is an equidigital number, since it uses as much as digits as its factorization.

805057061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8400, while the sum is 32.

The square root of 805057061 is about 28373.5274683991. The cubic root of 805057061 is about 930.2697259807.

The spelling of 805057061 in words is "eight hundred five million, fifty-seven thousand, sixty-one".