165506113 has 2 divisors, whose sum is σ = 165506114. Its totient is φ = 165506112.

The previous prime is 165506087. The next prime is 165506119. The reversal of 165506113 is 311605561.

165506113 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 153066384 + 12439729 = 12372^2 + 3527^2 .

It is a cyclic number.

It is not a de Polignac number, because 165506113 - 2¹³ = 165497921 is a prime.

It is not a weakly prime, because it can be changed into another prime (165506119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82753056 + 82753057.

It is an arithmetic number, because the mean of its divisors is an integer number (82753057).

Almost surely, 2^165506113 is an apocalyptic number.

It is an amenable number.

165506113 is a deficient number, since it is larger than the sum of its proper divisors (1).

165506113 is an equidigital number, since it uses as much as digits as its factorization.

165506113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 165506113 is about 12864.9179165667. The cubic root of 165506113 is about 549.0408771569.

The spelling of 165506113 in words is "one hundred sixty-five million, five hundred six thousand, one hundred thirteen".