85549111 has 2 divisors, whose sum is σ = 85549112. Its totient is φ = 85549110.

The previous prime is 85549081. The next prime is 85549129. The reversal of 85549111 is 11194558.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85549111 - 2⁹ = 85548599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85579111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42774555 + 42774556.

It is an arithmetic number, because the mean of its divisors is an integer number (42774556).

Almost surely, 2^85549111 is an apocalyptic number.

85549111 is a deficient number, since it is larger than the sum of its proper divisors (1).

85549111 is an equidigital number, since it uses as much as digits as its factorization.

85549111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200, while the sum is 34.

The square root of 85549111 is about 9249.2762419554. The cubic root of 85549111 is about 440.6277386346.

The spelling of 85549111 in words is "eighty-five million, five hundred forty-nine thousand, one hundred eleven".