165375247 has 4 divisors (see below), whose sum is σ = 165654720. Its totient is φ = 165095776.

The previous prime is 165375227. The next prime is 165375293. The reversal of 165375247 is 742573561.

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 165375247 - 2¹¹ = 165373199 is a prime.

It is a super-2 number, since 2×165375247² = 54697944640622018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165375227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138847 + ... + 140032.

It is an arithmetic number, because the mean of its divisors is an integer number (41413680).

Almost surely, 2^165375247 is an apocalyptic number.

165375247 is a deficient number, since it is larger than the sum of its proper divisors (279473).

165375247 is an equidigital number, since it uses as much as digits as its factorization.

165375247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279472.

The product of its digits is 176400, while the sum is 40.

The square root of 165375247 is about 12859.8307531631. The cubic root of 165375247 is about 548.8961297757.

The spelling of 165375247 in words is "one hundred sixty-five million, three hundred seventy-five thousand, two hundred forty-seven".