2217506513 has 2 divisors, whose sum is σ = 2217506514. Its totient is φ = 2217506512.

The previous prime is 2217506507. The next prime is 2217506527. The reversal of 2217506513 is 3156057122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1941547969 + 275958544 = 44063^2 + 16612^2 .

It is a cyclic number.

It is not a de Polignac number, because 2217506513 - 2²⁰ = 2216457937 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2217506513.

It is not a weakly prime, because it can be changed into another prime (2217506593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1108753256 + 1108753257.

It is an arithmetic number, because the mean of its divisors is an integer number (1108753257).

Almost surely, 2^2217506513 is an apocalyptic number.

It is an amenable number.

2217506513 is a deficient number, since it is larger than the sum of its proper divisors (1).

2217506513 is an equidigital number, since it uses as much as digits as its factorization.

2217506513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 2217506513 is about 47090.4078661462. The cubic root of 2217506513 is about 1304.0321578081.

The spelling of 2217506513 in words is "two billion, two hundred seventeen million, five hundred six thousand, five hundred thirteen".