165028601 has 2 divisors, whose sum is σ = 165028602. Its totient is φ = 165028600.

The previous prime is 165028583. The next prime is 165028613. The reversal of 165028601 is 106820561.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 141253225 + 23775376 = 11885^2 + 4876^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165028601 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (165028631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82514300 + 82514301.

It is an arithmetic number, because the mean of its divisors is an integer number (82514301).

Almost surely, 2^165028601 is an apocalyptic number.

It is an amenable number.

165028601 is a deficient number, since it is larger than the sum of its proper divisors (1).

165028601 is an equidigital number, since it uses as much as digits as its factorization.

165028601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 165028601 is about 12846.3458228400. The cubic root of 165028601 is about 548.5123445138.

The spelling of 165028601 in words is "one hundred sixty-five million, twenty-eight thousand, six hundred one".