80565445 has 16 divisors (see below), whose sum is σ = 100564992. Its totient is φ = 61911360.

The previous prime is 80565421. The next prime is 80565461. The reversal of 80565445 is 54456508.

It is not a de Polignac number, because 80565445 - 2⁹ = 80564933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 10044 + ... + 16186.

It is an arithmetic number, because the mean of its divisors is an integer number (6285312).

Almost surely, 2^80565445 is an apocalyptic number.

It is an amenable number.

80565445 is a deficient number, since it is larger than the sum of its proper divisors (19999547).

80565445 is a wasteful number, since it uses less digits than its factorization.

80565445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6252.

The product of its (nonzero) digits is 96000, while the sum is 37.

The square root of 80565445 is about 8975.8255887690. The cubic root of 80565445 is about 431.8997341750.

The spelling of 80565445 in words is "eighty million, five hundred sixty-five thousand, four hundred forty-five".