165662249 has 2 divisors, whose sum is σ = 165662250. Its totient is φ = 165662248.

The previous prime is 165662227. The next prime is 165662267. The reversal of 165662249 is 942266561.

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., 145636624 + 20025625 = 12068^2 + 4475^2 .

It is a cyclic number.

It is not a de Polignac number, because 165662249 - 2¹² = 165658153 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (165662269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82831124 + 82831125.

It is an arithmetic number, because the mean of its divisors is an integer number (82831125).

Almost surely, 2^165662249 is an apocalyptic number.

It is an amenable number.

165662249 is a deficient number, since it is larger than the sum of its proper divisors (1).

165662249 is an equidigital number, since it uses as much as digits as its factorization.

165662249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 41.

The square root of 165662249 is about 12870.9847719590. The cubic root of 165662249 is about 549.2134752193.

The spelling of 165662249 in words is "one hundred sixty-five million, six hundred sixty-two thousand, two hundred forty-nine".