80145505 has 16 divisors (see below), whose sum is σ = 105162624. Its totient is φ = 58151680.

The previous prime is 80145493. The next prime is 80145511. The reversal of 80145505 is 50554108.

It is not a de Polignac number, because 80145505 - 2⁹ = 80144993 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26217 + ... + 29113.

It is an arithmetic number, because the mean of its divisors is an integer number (6572664).

Almost surely, 2^80145505 is an apocalyptic number.

It is an amenable number.

80145505 is a deficient number, since it is larger than the sum of its proper divisors (25017119).

80145505 is a wasteful number, since it uses less digits than its factorization.

80145505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3416.

The product of its (nonzero) digits is 4000, while the sum is 28.

The square root of 80145505 is about 8952.4021915908. The cubic root of 80145505 is about 431.1480139705.

The spelling of 80145505 in words is "eighty million, one hundred forty-five thousand, five hundred five".