85411481 has 2 divisors, whose sum is σ = 85411482. Its totient is φ = 85411480.

The previous prime is 85411439. The next prime is 85411483. The reversal of 85411481 is 18411458.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52693081 + 32718400 = 7259^2 + 5720^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85411481 is a prime.

It is a super-2 number, since 2×85411481² = 14590242173226722, which contains 22 as substring.

Together with 85411483, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (85411483) 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, 42705740 + 42705741.

It is an arithmetic number, because the mean of its divisors is an integer number (42705741).

Almost surely, 2^85411481 is an apocalyptic number.

It is an amenable number.

85411481 is a deficient number, since it is larger than the sum of its proper divisors (1).

85411481 is an equidigital number, since it uses as much as digits as its factorization.

85411481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5120, while the sum is 32.

The square root of 85411481 is about 9241.8332055929. The cubic root of 85411481 is about 440.3913202590.

The spelling of 85411481 in words is "eighty-five million, four hundred eleven thousand, four hundred eighty-one".