165053533 has 2 divisors, whose sum is σ = 165053534. Its totient is φ = 165053532.

The previous prime is 165053531. The next prime is 165053549. The reversal of 165053533 is 335350561.

It is a happy number.

165053533 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 141063129 + 23990404 = 11877^2 + 4898^2 .

It is a cyclic number.

It is not a de Polignac number, because 165053533 - 2¹ = 165053531 is a prime.

Together with 165053531, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 165053495 and 165053504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165053531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82526766 + 82526767.

It is an arithmetic number, because the mean of its divisors is an integer number (82526767).

Almost surely, 2^165053533 is an apocalyptic number.

It is an amenable number.

165053533 is a deficient number, since it is larger than the sum of its proper divisors (1).

165053533 is an equidigital number, since it uses as much as digits as its factorization.

165053533 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20250, while the sum is 31.

The square root of 165053533 is about 12847.3161788756. The cubic root of 165053533 is about 548.5399656273.

The spelling of 165053533 in words is "one hundred sixty-five million, fifty-three thousand, five hundred thirty-three".