2509149 has 8 divisors (see below), whose sum is σ = 3542400. Its totient is φ = 1574336.

The previous prime is 2509147. The next prime is 2509163. The reversal of 2509149 is 9419052.

It is a happy number.

2509149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2509149 - 2¹ = 2509147 is a prime.

2509149 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2509141) 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 in 7 ways as a sum of consecutive naturals, for example, 24549 + ... + 24650.

It is an arithmetic number, because the mean of its divisors is an integer number (442800).

2^2509149 is an apocalyptic number.

It is an amenable number.

2509149 is a deficient number, since it is larger than the sum of its proper divisors (1033251).

2509149 is a wasteful number, since it uses less digits than its factorization.

2509149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49219.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 2509149 is about 1584.0293557886. The cubic root of 2509149 is about 135.8862406550.

Subtracting 2509149 from its reverse (9419052), we obtain a triangular number (6909903 = T₃₇₁₇).

The spelling of 2509149 in words is "two million, five hundred nine thousand, one hundred forty-nine".