18552005 has 8 divisors (see below), whose sum is σ = 22303512. Its totient is φ = 14814208.

The previous prime is 18551993. The next prime is 18552041. The reversal of 18552005 is 50025581.

It can be written as a sum of positive squares in 4 ways, for example, as 8099716 + 10452289 = 2846^2 + 3233^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18552005 - 2⁴ = 18551989 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 (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164 + ... + 6093.

It is an arithmetic number, because the mean of its divisors is an integer number (2787939).

Almost surely, 2^18552005 is an apocalyptic number.

It is an amenable number.

18552005 is a deficient number, since it is larger than the sum of its proper divisors (3751507).

18552005 is an equidigital number, since it uses as much as digits as its factorization.

18552005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6855.

The product of its (nonzero) digits is 2000, while the sum is 26.

The square root of 18552005 is about 4307.2038493668. The cubic root of 18552005 is about 264.7262153977.

Adding to 18552005 its reverse (50025581), we get a palindrome (68577586).

The spelling of 18552005 in words is "eighteen million, five hundred fifty-two thousand, five".