2872505 has 4 divisors (see below), whose sum is σ = 3447012. Its totient is φ = 2298000.

The previous prime is 2872481. The next prime is 2872523. The reversal of 2872505 is 5052782.

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

It can be written as a sum of positive squares in 2 ways, for example, as 426409 + 2446096 = 653^2 + 1564^2 .

It is not a de Polignac number, because 2872505 - 2¹² = 2868409 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 287246 + ... + 287255.

It is an arithmetic number, because the mean of its divisors is an integer number (861753).

2^2872505 is an apocalyptic number.

It is an amenable number.

2872505 is a deficient number, since it is larger than the sum of its proper divisors (574507).

2872505 is an equidigital number, since it uses as much as digits as its factorization.

2872505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574506.

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

The square root of 2872505 is about 1694.8466007282. The cubic root of 2872505 is about 142.1522040555.

The spelling of 2872505 in words is "two million, eight hundred seventy-two thousand, five hundred five".