18252001 has 2 divisors, whose sum is σ = 18252002. Its totient is φ = 18252000.

The previous prime is 18251977. The next prime is 18252023. The reversal of 18252001 is 10025281.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14622976 + 3629025 = 3824^2 + 1905^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18252001 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18252001.

It is not a weakly prime, because it can be changed into another prime (18252061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9126000 + 9126001.

It is an arithmetic number, because the mean of its divisors is an integer number (9126001).

Almost surely, 2^18252001 is an apocalyptic number.

It is an amenable number.

18252001 is a deficient number, since it is larger than the sum of its proper divisors (1).

18252001 is an equidigital number, since it uses as much as digits as its factorization.

18252001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 18252001 is about 4272.2360655750. The cubic root of 18252001 is about 263.2914934683.

Adding to 18252001 its reverse (10025281), we get a palindrome (28277282).

It can be divided in two parts, 1825200 and 1, that added together give a square (1825201 = 1351²).

The spelling of 18252001 in words is "eighteen million, two hundred fifty-two thousand, one".