2520605521 has 24 divisors (see below), whose sum is σ = 3143992320. Its totient is φ = 2007637632.

The previous prime is 2520605497. The next prime is 2520605561. The reversal of 2520605521 is 1255060252.

2520605521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2520605521 - 2¹¹ = 2520603473 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2520605521.

It is not an unprimeable number, because it can be changed into a prime (2520605561) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46656 + ... + 84958.

It is an arithmetic number, because the mean of its divisors is an integer number (130999680).

Almost surely, 2^2520605521 is an apocalyptic number.

It is an amenable number.

2520605521 is a deficient number, since it is larger than the sum of its proper divisors (623386799).

2520605521 is a wasteful number, since it uses less digits than its factorization.

2520605521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38413 (or 38406 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 2520605521 is about 50205.6323633116. The cubic root of 2520605521 is about 1360.9274097174.

Adding to 2520605521 its reverse (1255060252), we get a palindrome (3775665773).

The spelling of 2520605521 in words is "two billion, five hundred twenty million, six hundred five thousand, five hundred twenty-one".