2217517045 has 8 divisors (see below), whose sum is σ = 2752779960. Its totient is φ = 1712840640.

The previous prime is 2217517039. The next prime is 2217517051. The reversal of 2217517045 is 5407157122.

It is an interprime number because it is at equal distance from previous prime (2217517039) and next prime (2217517051).

It can be written as a sum of positive squares in 4 ways, for example, as 541679076 + 1675837969 = 23274^2 + 40937^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-2217517045 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2217517045.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7646466 + ... + 7646755.

It is an arithmetic number, because the mean of its divisors is an integer number (344097495).

Almost surely, 2^2217517045 is an apocalyptic number.

It is an amenable number.

2217517045 is a deficient number, since it is larger than the sum of its proper divisors (535262915).

2217517045 is a wasteful number, since it uses less digits than its factorization.

2217517045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15293255.

The product of its (nonzero) digits is 19600, while the sum is 34.

The square root of 2217517045 is about 47090.5196934585. The cubic root of 2217517045 is about 1304.0342222959.

The spelling of 2217517045 in words is "two billion, two hundred seventeen million, five hundred seventeen thousand, forty-five".