2716021565 has 4 divisors (see below), whose sum is σ = 3259225884. Its totient is φ = 2172817248.

The previous prime is 2716021549. The next prime is 2716021577. The reversal of 2716021565 is 5651206172.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 455779801 + 2260241764 = 21349^2 + 47542^2 .

It is a cyclic number.

It is not a de Polignac number, because 2716021565 - 2⁴ = 2716021549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 271602152 + ... + 271602161.

It is an arithmetic number, because the mean of its divisors is an integer number (814806471).

Almost surely, 2^2716021565 is an apocalyptic number.

It is an amenable number.

2716021565 is a deficient number, since it is larger than the sum of its proper divisors (543204319).

2716021565 is an equidigital number, since it uses as much as digits as its factorization.

2716021565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543204318.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 2716021565 is about 52115.4637799569. The cubic root of 2716021565 is about 1395.2254985047.

The spelling of 2716021565 in words is "two billion, seven hundred sixteen million, twenty-one thousand, five hundred sixty-five".