2916656521 has 2 divisors, whose sum is σ = 2916656522. Its totient is φ = 2916656520.

The previous prime is 2916656513. The next prime is 2916656539. The reversal of 2916656521 is 1256566192.

2916656521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2760031296 + 156625225 = 52536^2 + 12515^2 .

It is a cyclic number.

It is not a de Polignac number, because 2916656521 - 2³ = 2916656513 is a prime.

It is a super-2 number, since 2×2916656521² = 17013770522983646882, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2916606521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1458328260 + 1458328261.

It is an arithmetic number, because the mean of its divisors is an integer number (1458328261).

Almost surely, 2^2916656521 is an apocalyptic number.

It is an amenable number.

2916656521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2916656521 is an equidigital number, since it uses as much as digits as its factorization.

2916656521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 194400, while the sum is 43.

The square root of 2916656521 is about 54006.0785560292. The cubic root of 2916656521 is about 1428.7681570516.

The spelling of 2916656521 in words is "two billion, nine hundred sixteen million, six hundred fifty-six thousand, five hundred twenty-one".