2517817139 has 2 divisors, whose sum is σ = 2517817140. Its totient is φ = 2517817138.

The previous prime is 2517817111. The next prime is 2517817177. The reversal of 2517817139 is 9317187152.

2517817139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2517817139 - 2²⁰ = 2516768563 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2517817139.

It is not a weakly prime, because it can be changed into another prime (2517817109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1258908569 + 1258908570.

It is an arithmetic number, because the mean of its divisors is an integer number (1258908570).

Almost surely, 2^2517817139 is an apocalyptic number.

2517817139 is a deficient number, since it is larger than the sum of its proper divisors (1).

2517817139 is an equidigital number, since it uses as much as digits as its factorization.

2517817139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 105840, while the sum is 44.

The square root of 2517817139 is about 50177.8550657558. The cubic root of 2517817139 is about 1360.4253893855.

The spelling of 2517817139 in words is "two billion, five hundred seventeen million, eight hundred seventeen thousand, one hundred thirty-nine".