165183553 has 2 divisors, whose sum is σ = 165183554. Its totient is φ = 165183552.

The previous prime is 165183481. The next prime is 165183589. The reversal of 165183553 is 355381561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84327489 + 80856064 = 9183^2 + 8992^2 .

It is a cyclic number.

It is not a de Polignac number, because 165183553 - 2⁹ = 165183041 is a prime.

It is not a weakly prime, because it can be changed into another prime (165183353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82591776 + 82591777.

It is an arithmetic number, because the mean of its divisors is an integer number (82591777).

Almost surely, 2^165183553 is an apocalyptic number.

It is an amenable number.

165183553 is a deficient number, since it is larger than the sum of its proper divisors (1).

165183553 is an equidigital number, since it uses as much as digits as its factorization.

165183553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54000, while the sum is 37.

The square root of 165183553 is about 12852.3753835624. The cubic root of 165183553 is about 548.6839642553.

The spelling of 165183553 in words is "one hundred sixty-five million, one hundred eighty-three thousand, five hundred fifty-three".