2782505 has 8 divisors (see below), whose sum is σ = 3642624. Its totient is φ = 2023600.

The previous prime is 2782501. The next prime is 2782523. The reversal of 2782505 is 5052872.

2782505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2782505 - 2² = 2782501 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2782501) 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 7 ways as a sum of consecutive naturals, for example, 25241 + ... + 25350.

It is an arithmetic number, because the mean of its divisors is an integer number (455328).

2^2782505 is an apocalyptic number.

It is an amenable number.

2782505 is a deficient number, since it is larger than the sum of its proper divisors (860119).

2782505 is a wasteful number, since it uses less digits than its factorization.

2782505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50607.

The product of its (nonzero) digits is 5600, while the sum is 29.

The square root of 2782505 is about 1668.0842304872. The cubic root of 2782505 is about 140.6518075642.

The spelling of 2782505 in words is "two million, seven hundred eighty-two thousand, five hundred five".