2721195 has 20 divisors (see below), whose sum is σ = 4878720. Its totient is φ = 1451088.

The previous prime is 2721193. The next prime is 2721197. The reversal of 2721195 is 5911272.

2721195 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2721193) and next prime (2721197).

It is not a de Polignac number, because 2721195 - 2¹ = 2721193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

2721195 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2721193) 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 19 ways as a sum of consecutive naturals, for example, 2955 + ... + 3764.

It is an arithmetic number, because the mean of its divisors is an integer number (243936).

2^2721195 is an apocalyptic number.

2721195 is a deficient number, since it is larger than the sum of its proper divisors (2157525).

2721195 is an equidigital number, since it uses as much as digits as its factorization.

2721195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6736 (or 6727 counting only the distinct ones).

The product of its digits is 1260, while the sum is 27.

The square root of 2721195 is about 1649.6044980540. The cubic root of 2721195 is about 139.6110804471.

It can be divided in two parts, 2721 and 195, that added together give a square (2916 = 54²).

The spelling of 2721195 in words is "two million, seven hundred twenty-one thousand, one hundred ninety-five".