85571719 has 2 divisors, whose sum is σ = 85571720. Its totient is φ = 85571718.

The previous prime is 85571701. The next prime is 85571737. The reversal of 85571719 is 91717558.

It is a balanced prime because it is at equal distance from previous prime (85571701) and next prime (85571737).

It is a cyclic number.

It is not a de Polignac number, because 85571719 - 2⁹ = 85571207 is a prime.

It is a super-2 number, since 2×85571719² = 14645038185229922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85571219) 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, 42785859 + 42785860.

It is an arithmetic number, because the mean of its divisors is an integer number (42785860).

Almost surely, 2^85571719 is an apocalyptic number.

85571719 is a deficient number, since it is larger than the sum of its proper divisors (1).

85571719 is an equidigital number, since it uses as much as digits as its factorization.

85571719 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 88200, while the sum is 43.

The square root of 85571719 is about 9250.4983109020. The cubic root of 85571719 is about 440.6665500043. Note that the first 3 decimals are identical.

The spelling of 85571719 in words is "eighty-five million, five hundred seventy-one thousand, seven hundred nineteen".