264505165 has 4 divisors (see below), whose sum is σ = 317406204. Its totient is φ = 211604128.

The previous prime is 264505127. The next prime is 264505187. The reversal of 264505165 is 561505462.

264505165 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 71267364 + 193237801 = 8442^2 + 13901^2 .

It is a cyclic number.

It is not a de Polignac number, because 264505165 - 2¹⁷ = 264374093 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 264505165.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26450512 + ... + 26450521.

It is an arithmetic number, because the mean of its divisors is an integer number (79351551).

Almost surely, 2^264505165 is an apocalyptic number.

It is an amenable number.

264505165 is a deficient number, since it is larger than the sum of its proper divisors (52901039).

264505165 is an equidigital number, since it uses as much as digits as its factorization.

264505165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52901038.

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 264505165 is about 16263.6147581034. The cubic root of 264505165 is about 641.9157805628.

The spelling of 264505165 in words is "two hundred sixty-four million, five hundred five thousand, one hundred sixty-five".