18053775 has 18 divisors (see below), whose sum is σ = 32336720. Its totient is φ = 9628560.

The previous prime is 18053771. The next prime is 18053807. The reversal of 18053775 is 57735081.

It is not a de Polignac number, because 18053775 - 2² = 18053771 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18053771) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 39895 + ... + 40344.

Almost surely, 2^18053775 is an apocalyptic number.

18053775 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18053775 is a deficient number, since it is larger than the sum of its proper divisors (14282945).

18053775 is a wasteful number, since it uses less digits than its factorization.

18053775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80255 (or 80247 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 36.

The square root of 18053775 is about 4248.9734054240. The cubic root of 18053775 is about 262.3348621205.

The spelling of 18053775 in words is "eighteen million, fifty-three thousand, seven hundred seventy-five".