165228337 has 4 divisors (see below), whose sum is σ = 165282916. Its totient is φ = 165173760.

The previous prime is 165228331. The next prime is 165228353. The reversal of 165228337 is 733822561.

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

It can be written as a sum of positive squares in 2 ways, for example, as 72318016 + 92910321 = 8504^2 + 9639^2 .

It is a cyclic number.

It is not a de Polignac number, because 165228337 - 2⁷ = 165228209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 165228296 and 165228305.

It is not an unprimeable number, because it can be changed into a prime (165228331) 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, 22464 + ... + 28897.

It is an arithmetic number, because the mean of its divisors is an integer number (41320729).

Almost surely, 2^165228337 is an apocalyptic number.

It is an amenable number.

165228337 is a deficient number, since it is larger than the sum of its proper divisors (54579).

165228337 is an equidigital number, since it uses as much as digits as its factorization.

165228337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54578.

The product of its digits is 60480, while the sum is 37.

The square root of 165228337 is about 12854.1175115214. The cubic root of 165228337 is about 548.7335455481.

The spelling of 165228337 in words is "one hundred sixty-five million, two hundred twenty-eight thousand, three hundred thirty-seven".