80228777 has 2 divisors, whose sum is σ = 80228778. Its totient is φ = 80228776.

The previous prime is 80228747. The next prime is 80228779. The reversal of 80228777 is 77782208.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79941481 + 287296 = 8941^2 + 536^2 .

It is a cyclic number.

It is not a de Polignac number, because 80228777 - 2⁸ = 80228521 is a prime.

Together with 80228779, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_4681886 and since 80228777 and 4681886 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (80228779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40114388 + 40114389.

It is an arithmetic number, because the mean of its divisors is an integer number (40114389).

Almost surely, 2^80228777 is an apocalyptic number.

It is an amenable number.

80228777 is a deficient number, since it is larger than the sum of its proper divisors (1).

80228777 is an equidigital number, since it uses as much as digits as its factorization.

80228777 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 87808, while the sum is 41.

The square root of 80228777 is about 8957.0518029093. The cubic root of 80228777 is about 431.2972846843.

The spelling of 80228777 in words is "eighty million, two hundred twenty-eight thousand, seven hundred seventy-seven".