2721875 has 24 divisors (see below), whose sum is σ = 3718512. Its totient is φ = 1980000.

The previous prime is 2721871. The next prime is 2721877. The reversal of 2721875 is 5781272.

It is not a de Polignac number, because 2721875 - 2² = 2721871 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2721871) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40592 + ... + 40658.

It is an arithmetic number, because the mean of its divisors is an integer number (154938).

2^2721875 is an apocalyptic number.

2721875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2721875 is a deficient number, since it is larger than the sum of its proper divisors (996637).

2721875 is an frugal number, since it uses more digits than its factorization.

2721875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105 (or 85 counting only the distinct ones).

The product of its digits is 7840, while the sum is 32.

The square root of 2721875 is about 1649.8105951896. The cubic root of 2721875 is about 139.6227086262.

The spelling of 2721875 in words is "two million, seven hundred twenty-one thousand, eight hundred seventy-five".