18475055 has 4 divisors (see below), whose sum is σ = 22170072. Its totient is φ = 14780040.

The previous prime is 18475031. The next prime is 18475081. The reversal of 18475055 is 55057481.

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

It is not a de Polignac number, because 18475055 - 2⁶ = 18474991 is a prime.

It is a Duffinian number.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 1847501 + ... + 1847510.

It is an arithmetic number, because the mean of its divisors is an integer number (5542518).

Almost surely, 2^18475055 is an apocalyptic number.

18475055 is a deficient number, since it is larger than the sum of its proper divisors (3695017).

18475055 is an equidigital number, since it uses as much as digits as its factorization.

18475055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3695016.

The product of its (nonzero) digits is 28000, while the sum is 35.

The square root of 18475055 is about 4298.2618580073. The cubic root of 18475055 is about 264.3596977471.

The spelling of 18475055 in words is "eighteen million, four hundred seventy-five thousand, fifty-five".