165430061 has 4 divisors (see below), whose sum is σ = 165509052. Its totient is φ = 165351072.

The previous prime is 165430049. The next prime is 165430087. The reversal of 165430061 is 160034561.

165430061 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, and also an emirpimes, since its reverse is a distinct semiprime: 160034561 = 463 ⋅345647.

It can be written as a sum of positive squares in 2 ways, for example, as 39564100 + 125865961 = 6290^2 + 11219^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165430061 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 165430061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165430361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36266 + ... + 40571.

It is an arithmetic number, because the mean of its divisors is an integer number (41377263).

Almost surely, 2^165430061 is an apocalyptic number.

It is an amenable number.

165430061 is a deficient number, since it is larger than the sum of its proper divisors (78991).

165430061 is an equidigital number, since it uses as much as digits as its factorization.

165430061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78990.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 165430061 is about 12861.9617866016. The cubic root of 165430061 is about 548.9567673650.

The spelling of 165430061 in words is "one hundred sixty-five million, four hundred thirty thousand, sixty-one".