2520786317 has 16 divisors (see below), whose sum is σ = 2901395712. Its totient is φ = 2145346560.

The previous prime is 2520786311. The next prime is 2520786379. The reversal of 2520786317 is 7136870252.

It is a de Polignac number, because none of the positive numbers 2^k-2520786317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2520786311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 851003 + ... + 853959.

It is an arithmetic number, because the mean of its divisors is an integer number (181337232).

Almost surely, 2^2520786317 is an apocalyptic number.

It is an amenable number.

2520786317 is a deficient number, since it is larger than the sum of its proper divisors (380609395).

2520786317 is a wasteful number, since it uses less digits than its factorization.

2520786317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3788.

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 2520786317 is about 50207.4328859781. The cubic root of 2520786317 is about 1360.9599474479.

The spelling of 2520786317 in words is "two billion, five hundred twenty million, seven hundred eighty-six thousand, three hundred seventeen".