165064511 has 4 divisors (see below), whose sum is σ = 169525752. Its totient is φ = 160603272.

The previous prime is 165064499. The next prime is 165064531. The reversal of 165064511 is 115460561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 115460561 = 163 ⋅708347.

It is a cyclic number.

It is not a de Polignac number, because 165064511 - 2⁶ = 165064447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165064531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2230565 + ... + 2230638.

It is an arithmetic number, because the mean of its divisors is an integer number (42381438).

Almost surely, 2^165064511 is an apocalyptic number.

165064511 is a deficient number, since it is larger than the sum of its proper divisors (4461241).

165064511 is an equidigital number, since it uses as much as digits as its factorization.

165064511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4461240.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 165064511 is about 12847.7434205389. The cubic root of 165064511 is about 548.5521268094.

The spelling of 165064511 in words is "one hundred sixty-five million, sixty-four thousand, five hundred eleven".