85056571 has 2 divisors, whose sum is σ = 85056572. Its totient is φ = 85056570.

The previous prime is 85056563. The next prime is 85056577. The reversal of 85056571 is 17565058.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85056571 - 2³ = 85056563 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85056571.

It is not a weakly prime, because it can be changed into another prime (85056577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42528285 + 42528286.

It is an arithmetic number, because the mean of its divisors is an integer number (42528286).

Almost surely, 2^85056571 is an apocalyptic number.

85056571 is a deficient number, since it is larger than the sum of its proper divisors (1).

85056571 is an equidigital number, since it uses as much as digits as its factorization.

85056571 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42000, while the sum is 37.

The square root of 85056571 is about 9222.6119402260. The cubic root of 85056571 is about 439.7804879574.

The spelling of 85056571 in words is "eighty-five million, fifty-six thousand, five hundred seventy-one".