2216523473 has 2 divisors, whose sum is σ = 2216523474. Its totient is φ = 2216523472.

The previous prime is 2216523469. The next prime is 2216523493. The reversal of 2216523473 is 3743256122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2174636689 + 41886784 = 46633^2 + 6472^2 .

It is a cyclic number.

It is not a de Polignac number, because 2216523473 - 2² = 2216523469 is a prime.

It is not a weakly prime, because it can be changed into another prime (2216523433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1108261736 + 1108261737.

It is an arithmetic number, because the mean of its divisors is an integer number (1108261737).

Almost surely, 2^2216523473 is an apocalyptic number.

It is an amenable number.

2216523473 is a deficient number, since it is larger than the sum of its proper divisors (1).

2216523473 is an equidigital number, since it uses as much as digits as its factorization.

2216523473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 35.

The square root of 2216523473 is about 47079.9689146032. The cubic root of 2216523473 is about 1303.8394330458.

Adding to 2216523473 its reverse (3743256122), we get a palindrome (5959779595).

The spelling of 2216523473 in words is "two billion, two hundred sixteen million, five hundred twenty-three thousand, four hundred seventy-three".