8540253517 has 2 divisors, whose sum is σ = 8540253518. Its totient is φ = 8540253516.

The previous prime is 8540253511. The next prime is 8540253541. The reversal of 8540253517 is 7153520458.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4664070436 + 3876183081 = 68294^2 + 62259^2 .

It is a cyclic number.

It is not a de Polignac number, because 8540253517 - 2³ = 8540253509 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8540253517.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8540253511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4270126758 + 4270126759.

It is an arithmetic number, because the mean of its divisors is an integer number (4270126759).

Almost surely, 2^8540253517 is an apocalyptic number.

It is an amenable number.

8540253517 is a deficient number, since it is larger than the sum of its proper divisors (1).

8540253517 is an equidigital number, since it uses as much as digits as its factorization.

8540253517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168000, while the sum is 40.

The square root of 8540253517 is about 92413.4920723159. The cubic root of 8540253517 is about 2044.0440665034.

The spelling of 8540253517 in words is "eight billion, five hundred forty million, two hundred fifty-three thousand, five hundred seventeen".