165510089 has 2 divisors, whose sum is σ = 165510090. Its totient is φ = 165510088.

The previous prime is 165510049. The next prime is 165510097. The reversal of 165510089 is 980015561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110082064 + 55428025 = 10492^2 + 7445^2 .

It is a cyclic number.

It is not a de Polignac number, because 165510089 - 2⁸ = 165509833 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (165510029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82755044 + 82755045.

It is an arithmetic number, because the mean of its divisors is an integer number (82755045).

Almost surely, 2^165510089 is an apocalyptic number.

It is an amenable number.

165510089 is a deficient number, since it is larger than the sum of its proper divisors (1).

165510089 is an equidigital number, since it uses as much as digits as its factorization.

165510089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 35.

The square root of 165510089 is about 12865.0724444132. The cubic root of 165510089 is about 549.0452737096.

The spelling of 165510089 in words is "one hundred sixty-five million, five hundred ten thousand, eighty-nine".