165224147 has 4 divisors (see below), whose sum is σ = 180244536. Its totient is φ = 150203760.

The previous prime is 165224123. The next prime is 165224159. The reversal of 165224147 is 741422561.

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 165224147 - 2⁶ = 165224083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165224117) 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, 7510178 + ... + 7510199.

It is an arithmetic number, because the mean of its divisors is an integer number (45061134).

Almost surely, 2^165224147 is an apocalyptic number.

165224147 is a deficient number, since it is larger than the sum of its proper divisors (15020389).

165224147 is a wasteful number, since it uses less digits than its factorization.

165224147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15020388.

The product of its digits is 13440, while the sum is 32.

The square root of 165224147 is about 12853.9545276930. The cubic root of 165224147 is about 548.7289070924.

The spelling of 165224147 in words is "one hundred sixty-five million, two hundred twenty-four thousand, one hundred forty-seven".