80165555 has 4 divisors (see below), whose sum is σ = 96198672. Its totient is φ = 64132440.

The previous prime is 80165551. The next prime is 80165623. The reversal of 80165555 is 55556108.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 80165555 - 2² = 80165551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80165551) 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, 8016551 + ... + 8016560.

It is an arithmetic number, because the mean of its divisors is an integer number (24049668).

Almost surely, 2^80165555 is an apocalyptic number.

80165555 is a deficient number, since it is larger than the sum of its proper divisors (16033117).

80165555 is a wasteful number, since it uses less digits than its factorization.

80165555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16033116.

The product of its (nonzero) digits is 30000, while the sum is 35.

The square root of 80165555 is about 8953.5219327369. The cubic root of 80165555 is about 431.1839644039.

The spelling of 80165555 in words is "eighty million, one hundred sixty-five thousand, five hundred fifty-five".