2499559997 has 16 divisors (see below), whose sum is σ = 2901744000. Its totient is φ = 2127882240.

The previous prime is 2499559913. The next prime is 2499559999. The reversal of 2499559997 is 7999559942.

2499559997 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 2499559997 - 2¹⁶ = 2499494461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2499559999) 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, 3629 + ... + 70797.

It is an arithmetic number, because the mean of its divisors is an integer number (181359000).

Almost surely, 2^2499559997 is an apocalyptic number.

It is an amenable number.

2499559997 is a deficient number, since it is larger than the sum of its proper divisors (402184003).

2499559997 is a wasteful number, since it uses less digits than its factorization.

2499559997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67396.

The product of its digits is 82668600, while the sum is 68.

The square root of 2499559997 is about 49995.5997763803. The cubic root of 2499559997 is about 1357.1291801661.

Subtracting 2499559997 from its reverse (7999559942), we obtain a palindrome (5499999945).

It can be divided in two parts, 249955 and 9997, that added together give a palindrome (259952).

The spelling of 2499559997 in words is "two billion, four hundred ninety-nine million, five hundred fifty-nine thousand, nine hundred ninety-seven".