80516445 has 48 divisors (see below), whose sum is σ = 137497920. Its totient is φ = 40220928.

The previous prime is 80516419. The next prime is 80516459. The reversal of 80516445 is 54461508.

It is not a de Polignac number, because 80516445 - 2¹² = 80512349 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 579186 + ... + 579324.

It is an arithmetic number, because the mean of its divisors is an integer number (2864540).

Almost surely, 2^80516445 is an apocalyptic number.

It is an amenable number.

80516445 is a deficient number, since it is larger than the sum of its proper divisors (56981475).

80516445 is a wasteful number, since it uses less digits than its factorization.

80516445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266 (or 243 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 80516445 is about 8973.0956196844. The cubic root of 80516445 is about 431.8121557725.

The spelling of 80516445 in words is "eighty million, five hundred sixteen thousand, four hundred forty-five".