164052209 has 2 divisors, whose sum is σ = 164052210. Its totient is φ = 164052208.

The previous prime is 164052173. The next prime is 164052221. The reversal of 164052209 is 902250461.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 163456225 + 595984 = 12785^2 + 772^2 .

It is a cyclic number.

It is not a de Polignac number, because 164052209 - 2¹⁶ = 163986673 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (164052409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82026104 + 82026105.

It is an arithmetic number, because the mean of its divisors is an integer number (82026105).

Almost surely, 2^164052209 is an apocalyptic number.

It is an amenable number.

164052209 is a deficient number, since it is larger than the sum of its proper divisors (1).

164052209 is an equidigital number, since it uses as much as digits as its factorization.

164052209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 164052209 is about 12808.2867316437. The cubic root of 164052209 is about 547.4284459910.

The spelling of 164052209 in words is "one hundred sixty-four million, fifty-two thousand, two hundred nine".