18052503 has 16 divisors (see below), whose sum is σ = 27695616. Its totient is φ = 10245600.

The previous prime is 18052499. The next prime is 18052511. The reversal of 18052503 is 30525081.

It is not a de Polignac number, because 18052503 - 2² = 18052499 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18052513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 325 + ... + 6017.

It is an arithmetic number, because the mean of its divisors is an integer number (1730976).

Almost surely, 2^18052503 is an apocalyptic number.

18052503 is a deficient number, since it is larger than the sum of its proper divisors (9643113).

18052503 is a wasteful number, since it uses less digits than its factorization.

18052503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5854.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 18052503 is about 4248.8237195723. The cubic root of 18052503 is about 262.3287009385.

Adding to 18052503 its reverse (30525081), we get a palindrome (48577584).

The spelling of 18052503 in words is "eighteen million, fifty-two thousand, five hundred three".