2521205056 has 14 divisors (see below), whose sum is σ = 5003016410. Its totient is φ = 1260602496.

The previous prime is 2521205039. The next prime is 2521205059. The reversal of 2521205056 is 6505021252.

It can be written as a sum of positive squares in only one way, i.e., 2480040000 + 41165056 = 49800^2 + 6416^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521205059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19696851 + ... + 19696978.

It is an arithmetic number, because the mean of its divisors is an integer number (357358315).

Almost surely, 2^2521205056 is an apocalyptic number.

It is an amenable number.

2521205056 is a deficient number, since it is larger than the sum of its proper divisors (2481811354).

2521205056 is an equidigital number, since it uses as much as digits as its factorization.

2521205056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39393841 (or 39393831 counting only the distinct ones).

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

The square root of 2521205056 is about 50211.6028025396. The cubic root of 2521205056 is about 1361.0353016408.

The spelling of 2521205056 in words is "two billion, five hundred twenty-one million, two hundred five thousand, fifty-six".