2511221056 has 14 divisors (see below), whose sum is σ = 4983204410. Its totient is φ = 1255610496.

The previous prime is 2511221021. The next prime is 2511221077. The reversal of 2511221056 is 6501221152.

It can be written as a sum of positive squares in only one way, i.e., 2480040000 + 31181056 = 49800^2 + 5584^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2511221056.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19618851 + ... + 19618978.

Almost surely, 2^2511221056 is an apocalyptic number.

It is an amenable number.

2511221056 is a deficient number, since it is larger than the sum of its proper divisors (2471983354).

2511221056 is an equidigital number, since it uses as much as digits as its factorization.

2511221056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39237841 (or 39237831 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 2511221056 is about 50112.0849296854. The cubic root of 2511221056 is about 1359.2363532958.

The spelling of 2511221056 in words is "two billion, five hundred eleven million, two hundred twenty-one thousand, fifty-six".