15000149 has 4 divisors (see below), whose sum is σ = 15168780. Its totient is φ = 14831520.

The previous prime is 15000131. The next prime is 15000151. The reversal of 15000149 is 94100051.

15000149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94100051 = 131 ⋅718321.

It can be written as a sum of positive squares in 2 ways, for example, as 10080625 + 4919524 = 3175^2 + 2218^2 .

It is a cyclic number.

It is not a de Polignac number, because 15000149 - 2²⁰ = 13951573 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15000149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15000169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84182 + ... + 84359.

It is an arithmetic number, because the mean of its divisors is an integer number (3792195).

Almost surely, 2^15000149 is an apocalyptic number.

It is an amenable number.

15000149 is a deficient number, since it is larger than the sum of its proper divisors (168631).

15000149 is an equidigital number, since it uses as much as digits as its factorization.

15000149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168630.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 15000149 is about 3873.0025819769. The cubic root of 15000149 is about 246.6220240206.

Subtracting from 15000149 its sum of digits (20), we obtain a square (15000129 = 3873²).

The spelling of 15000149 in words is "fifteen million, one hundred forty-nine", and thus it is an aban number.