165252133 has 2 divisors, whose sum is σ = 165252134. Its totient is φ = 165252132.

The previous prime is 165252107. The next prime is 165252161. The reversal of 165252133 is 331252561.

It is an a-pointer prime, because the next prime (165252161) can be obtained adding 165252133 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113167044 + 52085089 = 10638^2 + 7217^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165252133 is a prime.

It is a super-2 number, since 2×165252133² = 54616534922099378, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165250133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82626066 + 82626067.

It is an arithmetic number, because the mean of its divisors is an integer number (82626067).

Almost surely, 2^165252133 is an apocalyptic number.

It is an amenable number.

165252133 is a deficient number, since it is larger than the sum of its proper divisors (1).

165252133 is an equidigital number, since it uses as much as digits as its factorization.

165252133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5400, while the sum is 28.

The square root of 165252133 is about 12855.0430959993. The cubic root of 165252133 is about 548.7598869471.

The spelling of 165252133 in words is "one hundred sixty-five million, two hundred fifty-two thousand, one hundred thirty-three".