2509557449 has 32 divisors (see below), whose sum is σ = 3128743680. Its totient is φ = 1964777472.

The previous prime is 2509557313. The next prime is 2509557469. The reversal of 2509557449 is 9447559052.

2509557449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2509557449 - 2¹² = 2509553353 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2509557397 and 2509557406.

It is not an unprimeable number, because it can be changed into a prime (2509557469) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 553817 + ... + 558329.

It is an arithmetic number, because the mean of its divisors is an integer number (97773240).

Almost surely, 2^2509557449 is an apocalyptic number.

It is an amenable number.

2509557449 is a deficient number, since it is larger than the sum of its proper divisors (619186231).

2509557449 is a wasteful number, since it uses less digits than its factorization.

2509557449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4689.

The product of its (nonzero) digits is 2268000, while the sum is 50.

The square root of 2509557449 is about 50095.4833193572. The cubic root of 2509557449 is about 1358.9361361798.

The spelling of 2509557449 in words is "two billion, five hundred nine million, five hundred fifty-seven thousand, four hundred forty-nine".