85365481 has 2 divisors, whose sum is σ = 85365482. Its totient is φ = 85365480.

The previous prime is 85365451. The next prime is 85365493. The reversal of 85365481 is 18456358.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68890000 + 16475481 = 8300^2 + 4059^2 .

It is a cyclic number.

It is not a de Polignac number, because 85365481 - 2⁷ = 85365353 is a prime.

It is a super-2 number, since 2×85365481² = 14574530692722722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (85365451) 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, 42682740 + 42682741.

It is an arithmetic number, because the mean of its divisors is an integer number (42682741).

Almost surely, 2^85365481 is an apocalyptic number.

It is an amenable number.

85365481 is a deficient number, since it is larger than the sum of its proper divisors (1).

85365481 is an equidigital number, since it uses as much as digits as its factorization.

85365481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 115200, while the sum is 40.

The square root of 85365481 is about 9239.3441866834. The cubic root of 85365481 is about 440.3122456492.

The spelling of 85365481 in words is "eighty-five million, three hundred sixty-five thousand, four hundred eighty-one".