80045305 has 4 divisors (see below), whose sum is σ = 96054372. Its totient is φ = 64036240.

The previous prime is 80045297. The next prime is 80045311. The reversal of 80045305 is 50354008.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18249984 + 61795321 = 4272^2 + 7861^2 .

It is not a de Polignac number, because 80045305 - 2³ = 80045297 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80045305.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8004526 + ... + 8004535.

It is an arithmetic number, because the mean of its divisors is an integer number (24013593).

Almost surely, 2^80045305 is an apocalyptic number.

It is an amenable number.

80045305 is a deficient number, since it is larger than the sum of its proper divisors (16009067).

80045305 is a wasteful number, since it uses less digits than its factorization.

80045305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16009066.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 80045305 is about 8946.8041780292. The cubic root of 80045305 is about 430.9682615432.

The spelling of 80045305 in words is "eighty million, forty-five thousand, three hundred five".