165051149 has 2 divisors, whose sum is σ = 165051150. Its totient is φ = 165051148.

The previous prime is 165051127. The next prime is 165051193. The reversal of 165051149 is 941150561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97515625 + 67535524 = 9875^2 + 8218^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165051149 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165051109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82525574 + 82525575.

It is an arithmetic number, because the mean of its divisors is an integer number (82525575).

Almost surely, 2^165051149 is an apocalyptic number.

It is an amenable number.

165051149 is a deficient number, since it is larger than the sum of its proper divisors (1).

165051149 is an equidigital number, since it uses as much as digits as its factorization.

165051149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 32.

The square root of 165051149 is about 12847.2233965165. The cubic root of 165051149 is about 548.5373246143.

The spelling of 165051149 in words is "one hundred sixty-five million, fifty-one thousand, one hundred forty-nine".