84523111 has 2 divisors, whose sum is σ = 84523112. Its totient is φ = 84523110.

The previous prime is 84523063. The next prime is 84523141. The reversal of 84523111 is 11132548.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84523111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84523141) 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, 42261555 + 42261556.

It is an arithmetic number, because the mean of its divisors is an integer number (42261556).

Almost surely, 2^84523111 is an apocalyptic number.

84523111 is a deficient number, since it is larger than the sum of its proper divisors (1).

84523111 is an equidigital number, since it uses as much as digits as its factorization.

84523111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 960, while the sum is 25.

The square root of 84523111 is about 9193.6451421621. The cubic root of 84523111 is about 438.8591502315.

Adding to 84523111 its reverse (11132548), we get a palindrome (95655659).

The spelling of 84523111 in words is "eighty-four million, five hundred twenty-three thousand, one hundred eleven".