15000145 has 4 divisors (see below), whose sum is σ = 18000180. Its totient is φ = 12000112.

The previous prime is 15000131. The next prime is 15000151. The reversal of 15000145 is 54100051.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5414929 + 9585216 = 2327^2 + 3096^2 .

It is a cyclic number.

It is not a de Polignac number, because 15000145 - 2⁷ = 15000017 is a prime.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 1500010 + ... + 1500019.

It is an arithmetic number, because the mean of its divisors is an integer number (4500045).

Almost surely, 2^15000145 is an apocalyptic number.

It is an amenable number.

15000145 is a deficient number, since it is larger than the sum of its proper divisors (3000035).

15000145 is an equidigital number, since it uses as much as digits as its factorization.

15000145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3000034.

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 15000145 is about 3873.0020655817. The cubic root of 15000145 is about 246.6220020988.

Subtracting from 15000145 its sum of digits (16), we obtain a square (15000129 = 3873²).

Adding to 15000145 its reverse (54100051), we get a palindrome (69100196).

The spelling of 15000145 in words is "fifteen million, one hundred forty-five", and thus it is an aban number.