2219651 has 12 divisors (see below), whose sum is σ = 2614248. Its totient is φ = 1878912.

The previous prime is 2219647. The next prime is 2219671. The reversal of 2219651 is 1569122.

2219651 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2219651 - 2² = 2219647 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2219651.

It is not an unprimeable number, because it can be changed into a prime (2219621) 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 11 ways as a sum of consecutive naturals, for example, 4520 + ... + 4986.

It is an arithmetic number, because the mean of its divisors is an integer number (217854).

2^2219651 is an apocalyptic number.

2219651 is a deficient number, since it is larger than the sum of its proper divisors (394597).

2219651 is an equidigital number, since it uses as much as digits as its factorization.

2219651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578 (or 571 counting only the distinct ones).

The product of its digits is 1080, while the sum is 26.

The square root of 2219651 is about 1489.8493212402. The cubic root of 2219651 is about 130.4452386417.

The spelling of 2219651 in words is "two million, two hundred nineteen thousand, six hundred fifty-one".