165136061 has 2 divisors, whose sum is σ = 165136062. Its totient is φ = 165136060.

The previous prime is 165136057. The next prime is 165136073. The reversal of 165136061 is 160631561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114811225 + 50324836 = 10715^2 + 7094^2 .

It is a cyclic number.

It is not a de Polignac number, because 165136061 - 2² = 165136057 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165136261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82568030 + 82568031.

It is an arithmetic number, because the mean of its divisors is an integer number (82568031).

Almost surely, 2^165136061 is an apocalyptic number.

It is an amenable number.

165136061 is a deficient number, since it is larger than the sum of its proper divisors (1).

165136061 is an equidigital number, since it uses as much as digits as its factorization.

165136061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 165136061 is about 12850.5276545362. The cubic root of 165136061 is about 548.6313750879.

The spelling of 165136061 in words is "one hundred sixty-five million, one hundred thirty-six thousand, sixty-one".