18055552 has 32 divisors (see below), whose sum is σ = 37540080. Its totient is φ = 8633856.

The previous prime is 18055517. The next prime is 18055553. The reversal of 18055552 is 25555081.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18055553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123 + ... + 6010.

Almost surely, 2^18055552 is an apocalyptic number.

It is an amenable number.

18055552 is an abundant number, since it is smaller than the sum of its proper divisors (19484528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18055552 is an equidigital number, since it uses as much as digits as its factorization.

18055552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6170 (or 6158 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 31.

The square root of 18055552 is about 4249.1825096129. The cubic root of 18055552 is about 262.3434688847.

The spelling of 18055552 in words is "eighteen million, fifty-five thousand, five hundred fifty-two".