80545544 has 8 divisors (see below), whose sum is σ = 151022910. Its totient is φ = 40272768.

The previous prime is 80545529. The next prime is 80545571. The reversal of 80545544 is 44554508.

It can be written as a sum of positive squares in only one way, i.e., 71605444 + 8940100 = 8462^2 + 2990^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5034089 + ... + 5034104.

Almost surely, 2^80545544 is an apocalyptic number.

It is an amenable number.

80545544 is a deficient number, since it is larger than the sum of its proper divisors (70477366).

80545544 is a wasteful number, since it uses less digits than its factorization.

80545544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10068199 (or 10068195 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 35.

The square root of 80545544 is about 8974.7169314692. The cubic root of 80545544 is about 431.8641691159.

The spelling of 80545544 in words is "eighty million, five hundred forty-five thousand, five hundred forty-four".