165072533 has 8 divisors (see below), whose sum is σ = 176060952. Its totient is φ = 154226176.

The previous prime is 165072521. The next prime is 165072599. The reversal of 165072533 is 335270561.

It can be written as a sum of positive squares in 4 ways, for example, as 106977649 + 58094884 = 10343^2 + 7622^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 165072533 - 2¹² = 165068437 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 165072533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165072433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33110 + ... + 37767.

It is an arithmetic number, because the mean of its divisors is an integer number (22007619).

Almost surely, 2^165072533 is an apocalyptic number.

It is an amenable number.

165072533 is a deficient number, since it is larger than the sum of its proper divisors (10988419).

165072533 is a wasteful number, since it uses less digits than its factorization.

165072533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71031.

The product of its (nonzero) digits is 18900, while the sum is 32.

The square root of 165072533 is about 12848.0556116480. The cubic root of 165072533 is about 548.5610130601.

The spelling of 165072533 in words is "one hundred sixty-five million, seventy-two thousand, five hundred thirty-three".