15189001 has 2 divisors, whose sum is σ = 15189002. Its totient is φ = 15189000.

The previous prime is 15188989. The next prime is 15189023. The reversal of 15189001 is 10098151.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14288400 + 900601 = 3780^2 + 949^2 .

It is a cyclic number.

It is not a de Polignac number, because 15189001 - 2⁵ = 15188969 is a prime.

It is not a weakly prime, because it can be changed into another prime (15189401) by changing a digit.

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 as a sum of consecutive naturals, namely, 7594500 + 7594501.

It is an arithmetic number, because the mean of its divisors is an integer number (7594501).

Almost surely, 2^15189001 is an apocalyptic number.

It is an amenable number.

15189001 is a deficient number, since it is larger than the sum of its proper divisors (1).

15189001 is an equidigital number, since it uses as much as digits as its factorization.

15189001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 25.

The square root of 15189001 is about 3897.3068906618. The cubic root of 15189001 is about 247.6527017404.

The spelling of 15189001 in words is "fifteen million, one hundred eighty-nine thousand, one".