165420516 has 24 divisors (see below), whose sum is σ = 388007424. Its totient is φ = 54850720.

The previous prime is 165420509. The next prime is 165420529. The reversal of 165420516 is 615024561.

165420516 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×165420516² = 54727894227412512, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33795 + ... + 38378.

It is an arithmetic number, because the mean of its divisors is an integer number (16166976).

Almost surely, 2^165420516 is an apocalyptic number.

It is an amenable number.

165420516 is an abundant number, since it is smaller than the sum of its proper divisors (222586908).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165420516 is a wasteful number, since it uses less digits than its factorization.

165420516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72371 (or 72369 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 165420516 is about 12861.5907258784. The cubic root of 165420516 is about 548.9462092413.

The spelling of 165420516 in words is "one hundred sixty-five million, four hundred twenty thousand, five hundred sixteen".