2719221 has 8 divisors (see below), whose sum is σ = 3783360. Its totient is φ = 1733952.

The previous prime is 2719219. The next prime is 2719231. The reversal of 2719221 is 1229172.

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

It is not a de Polignac number, because 2719221 - 2¹ = 2719219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2719191 and 2719200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2719231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19636 + ... + 19773.

It is an arithmetic number, because the mean of its divisors is an integer number (472920).

2^2719221 is an apocalyptic number.

It is an amenable number.

2719221 is a deficient number, since it is larger than the sum of its proper divisors (1064139).

2719221 is a wasteful number, since it uses less digits than its factorization.

2719221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39435.

The product of its digits is 504, while the sum is 24.

The square root of 2719221 is about 1649.0060642702. The cubic root of 2719221 is about 139.5773135495.

The spelling of 2719221 in words is "two million, seven hundred nineteen thousand, two hundred twenty-one".