80220445 has 4 divisors (see below), whose sum is σ = 96264540. Its totient is φ = 64176352.

The previous prime is 80220443. The next prime is 80220449. The reversal of 80220445 is 54402208.

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 11363641 + 68856804 = 3371^2 + 8298^2 .

It is a cyclic number.

It is not a de Polignac number, because 80220445 - 2¹ = 80220443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80220443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8022040 + ... + 8022049.

It is an arithmetic number, because the mean of its divisors is an integer number (24066135).

Almost surely, 2^80220445 is an apocalyptic number.

It is an amenable number.

80220445 is a deficient number, since it is larger than the sum of its proper divisors (16044095).

80220445 is a wasteful number, since it uses less digits than its factorization.

80220445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16044094.

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 80220445 is about 8956.5866824366. The cubic root of 80220445 is about 431.2823536603.

The spelling of 80220445 in words is "eighty million, two hundred twenty thousand, four hundred forty-five".