2216651573 has 4 divisors (see below), whose sum is σ = 2347042860. Its totient is φ = 2086260288.

The previous prime is 2216651557. The next prime is 2216651597. The reversal of 2216651573 is 3751566122.

It is a happy number.

2216651573 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1355933329 + 860718244 = 36823^2 + 29338^2 .

It is a cyclic number.

It is not a de Polignac number, because 2216651573 - 2⁴ = 2216651557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2216651543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65195618 + ... + 65195651.

It is an arithmetic number, because the mean of its divisors is an integer number (586760715).

Almost surely, 2^2216651573 is an apocalyptic number.

It is an amenable number.

2216651573 is a deficient number, since it is larger than the sum of its proper divisors (130391287).

2216651573 is a wasteful number, since it uses less digits than its factorization.

2216651573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130391286.

The product of its digits is 75600, while the sum is 38.

The square root of 2216651573 is about 47081.3293461431. The cubic root of 2216651573 is about 1303.8645502494.

The spelling of 2216651573 in words is "two billion, two hundred sixteen million, six hundred fifty-one thousand, five hundred seventy-three".