165041533 has 2 divisors, whose sum is σ = 165041534. Its totient is φ = 165041532.

The previous prime is 165041521. The next prime is 165041549. The reversal of 165041533 is 335140561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140707044 + 24334489 = 11862^2 + 4933^2 .

It is a cyclic number.

It is not a de Polignac number, because 165041533 - 2⁵ = 165041501 is a prime.

It is a super-2 number, since 2×165041533² = 54477415229980178, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165041563) 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 as a sum of consecutive naturals, namely, 82520766 + 82520767.

It is an arithmetic number, because the mean of its divisors is an integer number (82520767).

Almost surely, 2^165041533 is an apocalyptic number.

It is an amenable number.

165041533 is a deficient number, since it is larger than the sum of its proper divisors (1).

165041533 is an equidigital number, since it uses as much as digits as its factorization.

165041533 is an odious number, because the sum of its binary digits is odd.

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

The square root of 165041533 is about 12846.8491467753. The cubic root of 165041533 is about 548.5266716795.

The spelling of 165041533 in words is "one hundred sixty-five million, forty-one thousand, five hundred thirty-three".