80578081 has 2 divisors, whose sum is σ = 80578082. Its totient is φ = 80578080.

The previous prime is 80578063. The next prime is 80578093. The reversal of 80578081 is 18087508.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79923600 + 654481 = 8940^2 + 809^2 .

It is a cyclic number.

It is not a de Polignac number, because 80578081 - 2⁵ = 80578049 is a prime.

It is a super-2 number, since 2×80578081² = 12985654275285122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 80578081.

It is not a weakly prime, because it can be changed into another prime (80578481) 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, 40289040 + 40289041.

It is an arithmetic number, because the mean of its divisors is an integer number (40289041).

Almost surely, 2^80578081 is an apocalyptic number.

It is an amenable number.

80578081 is a deficient number, since it is larger than the sum of its proper divisors (1).

80578081 is an equidigital number, since it uses as much as digits as its factorization.

80578081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17920, while the sum is 37.

The square root of 80578081 is about 8976.5294518539. The cubic root of 80578081 is about 431.9223129193.

The spelling of 80578081 in words is "eighty million, five hundred seventy-eight thousand, eighty-one".