165332745 has 20 divisors (see below), whose sum is σ = 296374980. Its totient is φ = 88177248.

The previous prime is 165332731. The next prime is 165332747. The reversal of 165332745 is 547233561.

165332745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 76370121 + 88962624 = 8739^2 + 9432^2 .

It is not a de Polignac number, because 165332745 - 2¹² = 165328649 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165332747) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 203710 + ... + 204519.

It is an arithmetic number, because the mean of its divisors is an integer number (14818749).

Almost surely, 2^165332745 is an apocalyptic number.

165332745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

165332745 is a deficient number, since it is larger than the sum of its proper divisors (131042235).

165332745 is an equidigital number, since it uses as much as digits as its factorization.

165332745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408246 (or 408237 counting only the distinct ones).

The product of its digits is 75600, while the sum is 36.

The square root of 165332745 is about 12858.1781368902. The cubic root of 165332745 is about 548.8491030238.

The spelling of 165332745 in words is "one hundred sixty-five million, three hundred thirty-two thousand, seven hundred forty-five".