80804513 has 2 divisors, whose sum is σ = 80804514. Its totient is φ = 80804512.

The previous prime is 80804467. The next prime is 80804533. The reversal of 80804513 is 31540808.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80694289 + 110224 = 8983^2 + 332^2 .

It is a cyclic number.

It is not a de Polignac number, because 80804513 - 2¹⁸ = 80542369 is a prime.

It is not a weakly prime, because it can be changed into another prime (80804533) 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, 40402256 + 40402257.

It is an arithmetic number, because the mean of its divisors is an integer number (40402257).

Almost surely, 2^80804513 is an apocalyptic number.

It is an amenable number.

80804513 is a deficient number, since it is larger than the sum of its proper divisors (1).

80804513 is an equidigital number, since it uses as much as digits as its factorization.

80804513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 80804513 is about 8989.1330505227. The cubic root of 80804513 is about 432.3265153387.

The spelling of 80804513 in words is "eighty million, eight hundred four thousand, five hundred thirteen".