165013051 has 4 divisors (see below), whose sum is σ = 188586352. Its totient is φ = 141439752.

The previous prime is 165013021. The next prime is 165013073. The reversal of 165013051 is 150310561.

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

It is a cyclic number.

It is not a de Polignac number, because 165013051 - 2⁵ = 165013019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165013001) by changing a digit.

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, 11786640 + ... + 11786653.

It is an arithmetic number, because the mean of its divisors is an integer number (47146588).

Almost surely, 2^165013051 is an apocalyptic number.

165013051 is a deficient number, since it is larger than the sum of its proper divisors (23573301).

165013051 is an equidigital number, since it uses as much as digits as its factorization.

165013051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23573300.

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 165013051 is about 12845.7405781060. The cubic root of 165013051 is about 548.4951159146.

The spelling of 165013051 in words is "one hundred sixty-five million, thirteen thousand, fifty-one".