165352249 has 4 divisors (see below), whose sum is σ = 165380836. Its totient is φ = 165323664.

The previous prime is 165352241. The next prime is 165352259. The reversal of 165352249 is 942253561.

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 120890025 + 44462224 = 10995^2 + 6668^2 .

It is a cyclic number.

It is not a de Polignac number, because 165352249 - 2³ = 165352241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165352241) 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, 2214 + ... + 18319.

It is an arithmetic number, because the mean of its divisors is an integer number (41345209).

Almost surely, 2^165352249 is an apocalyptic number.

It is an amenable number.

165352249 is a deficient number, since it is larger than the sum of its proper divisors (28587).

165352249 is an equidigital number, since it uses as much as digits as its factorization.

165352249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28586.

The product of its digits is 64800, while the sum is 37.

The square root of 165352249 is about 12858.9365423428. The cubic root of 165352249 is about 548.8706844151.

The spelling of 165352249 in words is "one hundred sixty-five million, three hundred fifty-two thousand, two hundred forty-nine".