365216249 has 2 divisors, whose sum is σ = 365216250. Its totient is φ = 365216248.

The previous prime is 365216231. The next prime is 365216251. The reversal of 365216249 is 942612563.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 294740224 + 70476025 = 17168^2 + 8395^2 .

It is an emirp because it is prime and its reverse (942612563) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 365216249 - 2⁸ = 365215993 is a prime.

Together with 365216251, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (365216279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 182608124 + 182608125.

It is an arithmetic number, because the mean of its divisors is an integer number (182608125).

Almost surely, 2^365216249 is an apocalyptic number.

It is an amenable number.

365216249 is a deficient number, since it is larger than the sum of its proper divisors (1).

365216249 is an equidigital number, since it uses as much as digits as its factorization.

365216249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 38.

The square root of 365216249 is about 19110.6318315225. The cubic root of 365216249 is about 714.7980579548.

The spelling of 365216249 in words is "three hundred sixty-five million, two hundred sixteen thousand, two hundred forty-nine".