165222151 has 2 divisors, whose sum is σ = 165222152. Its totient is φ = 165222150.

The previous prime is 165222139. The next prime is 165222199. The reversal of 165222151 is 151222561.

165222151 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 165222151 - 2⁷ = 165222023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165222121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82611075 + 82611076.

It is an arithmetic number, because the mean of its divisors is an integer number (82611076).

Almost surely, 2^165222151 is an apocalyptic number.

165222151 is a deficient number, since it is larger than the sum of its proper divisors (1).

165222151 is an equidigital number, since it uses as much as digits as its factorization.

165222151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1200, while the sum is 25.

The square root of 165222151 is about 12853.8768859827. The cubic root of 165222151 is about 548.7266974329.

The spelling of 165222151 in words is "one hundred sixty-five million, two hundred twenty-two thousand, one hundred fifty-one".