856053061 has 2 divisors, whose sum is σ = 856053062. Its totient is φ = 856053060.

The previous prime is 856053047. The next prime is 856053089. The reversal of 856053061 is 160350658.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 782264961 + 73788100 = 27969^2 + 8590^2 .

It is a cyclic number.

It is not a de Polignac number, because 856053061 - 2²³ = 847664453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (856053161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428026530 + 428026531.

It is an arithmetic number, because the mean of its divisors is an integer number (428026531).

Almost surely, 2^856053061 is an apocalyptic number.

It is an amenable number.

856053061 is a deficient number, since it is larger than the sum of its proper divisors (1).

856053061 is an equidigital number, since it uses as much as digits as its factorization.

856053061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 856053061 is about 29258.3844564255. The cubic root of 856053061 is about 949.5114980644.

The spelling of 856053061 in words is "eight hundred fifty-six million, fifty-three thousand, sixty-one".