18052511 has 2 divisors, whose sum is σ = 18052512. Its totient is φ = 18052510.

The previous prime is 18052499. The next prime is 18052513. The reversal of 18052511 is 11525081.

It is a strong prime.

It is an emirp because it is prime and its reverse (11525081) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18052511 is a prime.

Together with 18052513, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18052513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9026255 + 9026256.

It is an arithmetic number, because the mean of its divisors is an integer number (9026256).

Almost surely, 2^18052511 is an apocalyptic number.

18052511 is a deficient number, since it is larger than the sum of its proper divisors (1).

18052511 is an equidigital number, since it uses as much as digits as its factorization.

18052511 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 400, while the sum is 23.

The square root of 18052511 is about 4248.8246610092. The cubic root of 18052511 is about 262.3287396889.

Adding to 18052511 its reverse (11525081), we get a palindrome (29577592).

The spelling of 18052511 in words is "eighteen million, fifty-two thousand, five hundred eleven".