2497905 has 16 divisors (see below), whose sum is σ = 4440960. Its totient is φ = 1332144.

The previous prime is 2497903. The next prime is 2497927. The reversal of 2497905 is 5097942.

2497905 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 2497905 - 2¹ = 2497903 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2497905.

It is not an unprimeable number, because it can be changed into a prime (2497903) 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 15 ways as a sum of consecutive naturals, for example, 9117 + ... + 9386.

It is an arithmetic number, because the mean of its divisors is an integer number (277560).

2^2497905 is an apocalyptic number.

It is an amenable number.

2497905 is a deficient number, since it is larger than the sum of its proper divisors (1943055).

2497905 is a wasteful number, since it uses less digits than its factorization.

2497905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18517 (or 18511 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 2497905 is about 1580.4761940630. The cubic root of 2497905 is about 135.6829588689.

The spelling of 2497905 in words is "two million, four hundred ninety-seven thousand, nine hundred five".