2521005487 has 16 divisors (see below), whose sum is σ = 3384847872. Its totient is φ = 1813309920.

The previous prime is 2521005451. The next prime is 2521005491. The reversal of 2521005487 is 7845001252.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2521005487 - 2¹⁹ = 2520481199 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521005407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1258243 + ... + 1260244.

It is an arithmetic number, because the mean of its divisors is an integer number (211552992).

Almost surely, 2^2521005487 is an apocalyptic number.

2521005487 is a deficient number, since it is larger than the sum of its proper divisors (863842385).

2521005487 is a wasteful number, since it uses less digits than its factorization.

2521005487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2518518.

The product of its (nonzero) digits is 22400, while the sum is 34.

The square root of 2521005487 is about 50209.6154834908. The cubic root of 2521005487 is about 1360.9993892345. Note that the first 3 decimals are identical.

It can be divided in two parts, 252 and 1005487, that multiplied together give a square (253382724 = 15918²).

The spelling of 2521005487 in words is "two billion, five hundred twenty-one million, five thousand, four hundred eighty-seven".