2548987509 has 16 divisors (see below), whose sum is σ = 3528302400. Its totient is φ = 1634914176.

The previous prime is 2548987499. The next prime is 2548987513. The reversal of 2548987509 is 9057898452.

It is a happy number.

It is not a de Polignac number, because 2548987509 - 2²³ = 2540598901 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2548987559) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27144 + ... + 76385.

It is an arithmetic number, because the mean of its divisors is an integer number (220518900).

Almost surely, 2^2548987509 is an apocalyptic number.

2548987509 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2548987509 is a deficient number, since it is larger than the sum of its proper divisors (979314891).

2548987509 is a wasteful number, since it uses less digits than its factorization.

2548987509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103844.

The product of its (nonzero) digits is 7257600, while the sum is 57.

The square root of 2548987509 is about 50487.4985417182. The cubic root of 2548987509 is about 1366.0163654989.

The spelling of 2548987509 in words is "two billion, five hundred forty-eight million, nine hundred eighty-seven thousand, five hundred nine".