2511717021 has 12 divisors (see below), whose sum is σ = 3957857280. Its totient is φ = 1522252680.

The previous prime is 2511717007. The next prime is 2511717077. The reversal of 2511717021 is 1207171152.

It is not a de Polignac number, because 2511717021 - 2⁶ = 2511716957 is a prime.

It is a super-2 number, since 2×2511717021² = 12617444787162228882, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2511717121) 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 11 ways as a sum of consecutive naturals, for example, 12685341 + ... + 12685538.

It is an arithmetic number, because the mean of its divisors is an integer number (329821440).

Almost surely, 2^2511717021 is an apocalyptic number.

It is an amenable number.

2511717021 is a deficient number, since it is larger than the sum of its proper divisors (1446140259).

2511717021 is a wasteful number, since it uses less digits than its factorization.

2511717021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25370896 (or 25370893 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 27.

The square root of 2511717021 is about 50117.0332422022. The cubic root of 2511717021 is about 1359.3258302564.

Adding to 2511717021 its reverse (1207171152), we get a palindrome (3718888173).

The spelling of 2511717021 in words is "two billion, five hundred eleven million, seven hundred seventeen thousand, twenty-one".