165004111 has 2 divisors, whose sum is σ = 165004112. Its totient is φ = 165004110.

The previous prime is 165004087. The next prime is 165004117. The reversal of 165004111 is 111400561.

It is a strong prime.

It is an emirp because it is prime and its reverse (111400561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 165004111 - 2²¹ = 162906959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165004117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82502055 + 82502056.

It is an arithmetic number, because the mean of its divisors is an integer number (82502056).

Almost surely, 2^165004111 is an apocalyptic number.

165004111 is a deficient number, since it is larger than the sum of its proper divisors (1).

165004111 is an equidigital number, since it uses as much as digits as its factorization.

165004111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 165004111 is about 12845.3925981264. The cubic root of 165004111 is about 548.4852103650.

Adding to 165004111 its reverse (111400561), we get a palindrome (276404672).

The spelling of 165004111 in words is "one hundred sixty-five million, four thousand, one hundred eleven".