165224361 has 16 divisors (see below), whose sum is σ = 237290240. Its totient is φ = 101923920.

The previous prime is 165224303. The next prime is 165224363. The reversal of 165224361 is 163422561.

It is not a de Polignac number, because 165224361 - 2¹⁰ = 165223337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (165224363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31255 + ... + 36156.

It is an arithmetic number, because the mean of its divisors is an integer number (14830640).

Almost surely, 2^165224361 is an apocalyptic number.

It is an amenable number.

165224361 is a deficient number, since it is larger than the sum of its proper divisors (72065879).

165224361 is a wasteful number, since it uses less digits than its factorization.

165224361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67476.

The product of its digits is 8640, while the sum is 30.

The square root of 165224361 is about 12853.9628519768. The cubic root of 165224361 is about 548.7291439987.

The spelling of 165224361 in words is "one hundred sixty-five million, two hundred twenty-four thousand, three hundred sixty-one".