80277913 has 2 divisors, whose sum is σ = 80277914. Its totient is φ = 80277912.

The previous prime is 80277871. The next prime is 80277917. The reversal of 80277913 is 31977208.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79085449 + 1192464 = 8893^2 + 1092^2 .

It is a cyclic number.

It is not a de Polignac number, because 80277913 - 2²¹ = 78180761 is a prime.

It is equal to p_4684654 and since 80277913 and 4684654 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 (80277917) 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, 40138956 + 40138957.

It is an arithmetic number, because the mean of its divisors is an integer number (40138957).

Almost surely, 2^80277913 is an apocalyptic number.

It is an amenable number.

80277913 is a deficient number, since it is larger than the sum of its proper divisors (1).

80277913 is an equidigital number, since it uses as much as digits as its factorization.

80277913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 80277913 is about 8959.7942498698. The cubic root of 80277913 is about 431.3853158508.

The spelling of 80277913 in words is "eighty million, two hundred seventy-seven thousand, nine hundred thirteen".