2520626513 has 4 divisors (see below), whose sum is σ = 2533686948. Its totient is φ = 2507566080.

The previous prime is 2520626491. The next prime is 2520626519. The reversal of 2520626513 is 3156260252.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 999002449 + 1521624064 = 31607^2 + 39008^2 .

It is a cyclic number.

It is not a de Polignac number, because 2520626513 - 2⁸ = 2520626257 is a prime.

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 2520626513.

It is not an unprimeable number, because it can be changed into a prime (2520626519) 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 3 ways as a sum of consecutive naturals, for example, 6529928 + ... + 6530313.

It is an arithmetic number, because the mean of its divisors is an integer number (633421737).

Almost surely, 2^2520626513 is an apocalyptic number.

It is an amenable number.

2520626513 is a deficient number, since it is larger than the sum of its proper divisors (13060435).

2520626513 is a wasteful number, since it uses less digits than its factorization.

2520626513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13060434.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 2520626513 is about 50205.8414230854. The cubic root of 2520626513 is about 1360.9311877129.

Adding to 2520626513 its reverse (3156260252), we get a palindrome (5676886765).

The spelling of 2520626513 in words is "two billion, five hundred twenty million, six hundred twenty-six thousand, five hundred thirteen".