80845515 has 12 divisors (see below), whose sum is σ = 140132304. Its totient is φ = 43117584.

The previous prime is 80845507. The next prime is 80845537. The reversal of 80845515 is 51554808.

It is not a de Polignac number, because 80845515 - 2³ = 80845507 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80845515.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 898239 + ... + 898328.

It is an arithmetic number, because the mean of its divisors is an integer number (11677692).

Almost surely, 2^80845515 is an apocalyptic number.

80845515 is a deficient number, since it is larger than the sum of its proper divisors (59286789).

80845515 is a wasteful number, since it uses less digits than its factorization.

80845515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1796578 (or 1796575 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 36.

The square root of 80845515 is about 8991.4134039093. The cubic root of 80845515 is about 432.3996269911.

The spelling of 80845515 in words is "eighty million, eight hundred forty-five thousand, five hundred fifteen".