85505011 has 2 divisors, whose sum is σ = 85505012. Its totient is φ = 85505010.

The previous prime is 85505003. The next prime is 85505029. The reversal of 85505011 is 11050558.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85505011 - 2³ = 85505003 is a prime.

It is a super-2 number, since 2×85505011² = 14622213812220242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (85505071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42752505 + 42752506.

It is an arithmetic number, because the mean of its divisors is an integer number (42752506).

Almost surely, 2^85505011 is an apocalyptic number.

85505011 is a deficient number, since it is larger than the sum of its proper divisors (1).

85505011 is an equidigital number, since it uses as much as digits as its factorization.

85505011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1000, while the sum is 25.

The square root of 85505011 is about 9246.8919643305. The cubic root of 85505011 is about 440.5520120608.

Adding to 85505011 its reverse (11050558), we get a palindrome (96555569).

The spelling of 85505011 in words is "eighty-five million, five hundred five thousand, eleven".