165501101 has 2 divisors, whose sum is σ = 165501102. Its totient is φ = 165501100.

The previous prime is 165501041. The next prime is 165501143. The reversal of 165501101 is 101105561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 164737225 + 763876 = 12835^2 + 874^2 .

It is a cyclic number.

It is not a de Polignac number, because 165501101 - 2¹⁴ = 165484717 is a prime.

It is a super-2 number, since 2×165501101² = 54781228864424402, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165521101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82750550 + 82750551.

It is an arithmetic number, because the mean of its divisors is an integer number (82750551).

Almost surely, 2^165501101 is an apocalyptic number.

It is an amenable number.

165501101 is a deficient number, since it is larger than the sum of its proper divisors (1).

165501101 is an equidigital number, since it uses as much as digits as its factorization.

165501101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 150, while the sum is 20.

The square root of 165501101 is about 12864.7231217776. The cubic root of 165501101 is about 549.0353349232.

Adding to 165501101 its reverse (101105561), we get a palindrome (266606662).

The spelling of 165501101 in words is "one hundred sixty-five million, five hundred one thousand, one hundred one".