85541111 has 4 divisors (see below), whose sum is σ = 86817912. Its totient is φ = 84264312.

The previous prime is 85541101. The next prime is 85541119. The reversal of 85541111 is 11114558.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85541111 - 2¹⁰ = 85540087 is a prime.

It is a super-2 number, since 2×85541111² = 14634563342228642, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85541119) 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 in 3 ways as a sum of consecutive naturals, for example, 638300 + ... + 638433.

It is an arithmetic number, because the mean of its divisors is an integer number (21704478).

Almost surely, 2^85541111 is an apocalyptic number.

85541111 is a deficient number, since it is larger than the sum of its proper divisors (1276801).

85541111 is a wasteful number, since it uses less digits than its factorization.

85541111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1276800.

The product of its digits is 800, while the sum is 26.

The square root of 85541111 is about 9248.8437655742. The cubic root of 85541111 is about 440.6140033203.

Adding to 85541111 its reverse (11114558), we get a palindrome (96655669).

The spelling of 85541111 in words is "eighty-five million, five hundred forty-one thousand, one hundred eleven".