2520605813 has 12 divisors (see below), whose sum is σ = 2771805120. Its totient is φ = 2290449480.

The previous prime is 2520605807. The next prime is 2520605821. The reversal of 2520605813 is 3185060252.

It is a de Polignac number, because none of the positive numbers 2^k-2520605813 is a prime.

It is a super-3 number, since 3×2520605813³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2520605813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2520605833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 491006 + ... + 496112.

It is an arithmetic number, because the mean of its divisors is an integer number (230983760).

Almost surely, 2^2520605813 is an apocalyptic number.

It is an amenable number.

2520605813 is a deficient number, since it is larger than the sum of its proper divisors (251199307).

2520605813 is a wasteful number, since it uses less digits than its factorization.

2520605813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9208 (or 9197 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 2520605813 is about 50205.6352713518. The cubic root of 2520605813 is about 1360.9274622697.

The spelling of 2520605813 in words is "two billion, five hundred twenty million, six hundred five thousand, eight hundred thirteen".