18080055 has 24 divisors (see below), whose sum is σ = 35816352. Its totient is φ = 8265024.

The previous prime is 18080033. The next prime is 18080059. The reversal of 18080055 is 55008081.

It is not a de Polignac number, because 18080055 - 2¹⁰ = 18079031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18080059) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 28384 + ... + 29013.

It is an arithmetic number, because the mean of its divisors is an integer number (1492348).

Almost surely, 2^18080055 is an apocalyptic number.

18080055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18080055 is a deficient number, since it is larger than the sum of its proper divisors (17736297).

18080055 is a wasteful number, since it uses less digits than its factorization.

18080055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57415 (or 57412 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 27.

The square root of 18080055 is about 4252.0647925449. The cubic root of 18080055 is about 262.4620897634.

The spelling of 18080055 in words is "eighteen million, eighty thousand, fifty-five".