80504111 has 2 divisors, whose sum is σ = 80504112. Its totient is φ = 80504110.

The previous prime is 80504089. The next prime is 80504141. The reversal of 80504111 is 11140508.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80504111 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80504141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40252055 + 40252056.

It is an arithmetic number, because the mean of its divisors is an integer number (40252056).

Almost surely, 2^80504111 is an apocalyptic number.

80504111 is a deficient number, since it is larger than the sum of its proper divisors (1).

80504111 is an equidigital number, since it uses as much as digits as its factorization.

80504111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 160, while the sum is 20.

The square root of 80504111 is about 8972.4083166115. The cubic root of 80504111 is about 431.7901054402.

Adding to 80504111 its reverse (11140508), we get a palindrome (91644619).

The spelling of 80504111 in words is "eighty million, five hundred four thousand, one hundred eleven".