18552007 has 4 divisors (see below), whose sum is σ = 19358640. Its totient is φ = 17745376.

The previous prime is 18551993. The next prime is 18552041. The reversal of 18552007 is 70025581.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70025581 = 41 ⋅1707941.

It is a cyclic number.

It is not a de Polignac number, because 18552007 - 2¹¹ = 18549959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18552047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 403282 + ... + 403327.

It is an arithmetic number, because the mean of its divisors is an integer number (4839660).

Almost surely, 2^18552007 is an apocalyptic number.

18552007 is a deficient number, since it is larger than the sum of its proper divisors (806633).

18552007 is an equidigital number, since it uses as much as digits as its factorization.

18552007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806632.

The product of its (nonzero) digits is 2800, while the sum is 28.

The square root of 18552007 is about 4307.2040815360. The cubic root of 18552007 is about 264.7262249106.

Adding to 18552007 its reverse (70025581), we get a palindrome (88577588).

The spelling of 18552007 in words is "eighteen million, five hundred fifty-two thousand, seven".