2499805 has 32 divisors (see below), whose sum is σ = 3852288. Its totient is φ = 1512000.

The previous prime is 2499803. The next prime is 2499821. The reversal of 2499805 is 5089942.

2499805 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 2499805 - 2¹ = 2499803 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2499803) 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 31 ways as a sum of consecutive naturals, for example, 16480 + ... + 16630.

It is an arithmetic number, because the mean of its divisors is an integer number (120384).

2^2499805 is an apocalyptic number.

It is an amenable number.

2499805 is a deficient number, since it is larger than the sum of its proper divisors (1352483).

2499805 is a wasteful number, since it uses less digits than its factorization.

2499805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 2499805 is about 1581.0771644673. The cubic root of 2499805 is about 135.7173519951.

The spelling of 2499805 in words is "two million, four hundred ninety-nine thousand, eight hundred five".