80365445 has 8 divisors (see below), whose sum is σ = 96535800. Its totient is φ = 64227520.

The previous prime is 80365403. The next prime is 80365471. The reversal of 80365445 is 54456308.

It can be written as a sum of positive squares in 4 ways, for example, as 18931201 + 61434244 = 4351^2 + 7838^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 80365445 - 2²² = 76171141 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2270 + ... + 12879.

It is an arithmetic number, because the mean of its divisors is an integer number (12066975).

Almost surely, 2^80365445 is an apocalyptic number.

It is an amenable number.

80365445 is a deficient number, since it is larger than the sum of its proper divisors (16170355).

80365445 is a wasteful number, since it uses less digits than its factorization.

80365445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16215.

The product of its (nonzero) digits is 57600, while the sum is 35.

The square root of 80365445 is about 8964.6776294522. The cubic root of 80365445 is about 431.5420476438.

The spelling of 80365445 in words is "eighty million, three hundred sixty-five thousand, four hundred forty-five".