2499559 has 4 divisors (see below), whose sum is σ = 2504320. Its totient is φ = 2494800.

The previous prime is 2499551. The next prime is 2499577. The reversal of 2499559 is 9559942.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2499559 - 2³ = 2499551 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 (2499551) 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, 1479 + ... + 2680.

It is an arithmetic number, because the mean of its divisors is an integer number (626080).

2^2499559 is an apocalyptic number.

2499559 is a deficient number, since it is larger than the sum of its proper divisors (4761).

2499559 is an equidigital number, since it uses as much as digits as its factorization.

2499559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4760.

The product of its digits is 145800, while the sum is 43.

The square root of 2499559 is about 1580.9993674888. Note that the first 3 decimals coincide. The cubic root of 2499559 is about 135.7128999727.

The spelling of 2499559 in words is "two million, four hundred ninety-nine thousand, five hundred fifty-nine".