2165526533 has 2 divisors, whose sum is σ = 2165526534. Its totient is φ = 2165526532.

The previous prime is 2165526529. The next prime is 2165526553. The reversal of 2165526533 is 3356255612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1897647844 + 267878689 = 43562^2 + 16367^2 .

It is a cyclic number.

It is not a de Polignac number, because 2165526533 - 2² = 2165526529 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2165526553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1082763266 + 1082763267.

It is an arithmetic number, because the mean of its divisors is an integer number (1082763267).

Almost surely, 2^2165526533 is an apocalyptic number.

It is an amenable number.

2165526533 is a deficient number, since it is larger than the sum of its proper divisors (1).

2165526533 is an equidigital number, since it uses as much as digits as its factorization.

2165526533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 162000, while the sum is 38.

The square root of 2165526533 is about 46535.2182008423. The cubic root of 2165526533 is about 1293.7623338521.

The spelling of 2165526533 in words is "two billion, one hundred sixty-five million, five hundred twenty-six thousand, five hundred thirty-three".