2615220317 has 2 divisors, whose sum is σ = 2615220318. Its totient is φ = 2615220316.

The previous prime is 2615220259. The next prime is 2615220353. The reversal of 2615220317 is 7130225162.

It is a happy number.

2615220317 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2614685956 + 534361 = 51134^2 + 731^2 .

It is a cyclic number.

It is not a de Polignac number, because 2615220317 - 2⁸ = 2615220061 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2615220317.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2615220617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1307610158 + 1307610159.

It is an arithmetic number, because the mean of its divisors is an integer number (1307610159).

Almost surely, 2^2615220317 is an apocalyptic number.

It is an amenable number.

2615220317 is a deficient number, since it is larger than the sum of its proper divisors (1).

2615220317 is an equidigital number, since it uses as much as digits as its factorization.

2615220317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 2615220317 is about 51139.2248376919. The cubic root of 2615220317 is about 1377.7468513246.

Adding to 2615220317 its reverse (7130225162), we get a palindrome (9745445479).

The spelling of 2615220317 in words is "two billion, six hundred fifteen million, two hundred twenty thousand, three hundred seventeen".