2917720513 has 2 divisors, whose sum is σ = 2917720514. Its totient is φ = 2917720512.

The previous prime is 2917720469. The next prime is 2917720517. The reversal of 2917720513 is 3150277192.

2917720513 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., 2575359504 + 342361009 = 50748^2 + 18503^2 .

It is a cyclic number.

It is not a de Polignac number, because 2917720513 - 2²⁵ = 2884166081 is a prime.

It is not a weakly prime, because it can be changed into another prime (2917720517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1458860256 + 1458860257.

It is an arithmetic number, because the mean of its divisors is an integer number (1458860257).

Almost surely, 2^2917720513 is an apocalyptic number.

It is an amenable number.

2917720513 is a deficient number, since it is larger than the sum of its proper divisors (1).

2917720513 is an equidigital number, since it uses as much as digits as its factorization.

2917720513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26460, while the sum is 37.

The square root of 2917720513 is about 54015.9283267445. The cubic root of 2917720513 is about 1428.9418734354.

The spelling of 2917720513 in words is "two billion, nine hundred seventeen million, seven hundred twenty thousand, five hundred thirteen".