80855377 has 2 divisors, whose sum is σ = 80855378. Its totient is φ = 80855376.

The previous prime is 80855371. The next prime is 80855387. The reversal of 80855377 is 77355808.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67305616 + 13549761 = 8204^2 + 3681^2 .

It is a cyclic number.

It is not a de Polignac number, because 80855377 - 2¹⁹ = 80331089 is a prime.

It is not a weakly prime, because it can be changed into another prime (80855371) by changing a digit.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40427688 + 40427689.

It is an arithmetic number, because the mean of its divisors is an integer number (40427689).

Almost surely, 2^80855377 is an apocalyptic number.

It is an amenable number.

80855377 is a deficient number, since it is larger than the sum of its proper divisors (1).

80855377 is an equidigital number, since it uses as much as digits as its factorization.

80855377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 235200, while the sum is 43.

The square root of 80855377 is about 8991.9617992961. The cubic root of 80855377 is about 432.4172084724.

The spelling of 80855377 in words is "eighty million, eight hundred fifty-five thousand, three hundred seventy-seven".