364224221 has 4 divisors (see below), whose sum is σ = 364269852. Its totient is φ = 364178592.

The previous prime is 364224209. The next prime is 364224241. The reversal of 364224221 is 122422463.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 122422463 = 59 ⋅2074957.

It can be written as a sum of positive squares in 2 ways, for example, as 167832025 + 196392196 = 12955^2 + 14014^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-364224221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (364224241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7346 + ... + 27971.

It is an arithmetic number, because the mean of its divisors is an integer number (91067463).

Almost surely, 2^364224221 is an apocalyptic number.

It is an amenable number.

364224221 is a deficient number, since it is larger than the sum of its proper divisors (45631).

364224221 is a wasteful number, since it uses less digits than its factorization.

364224221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45630.

The product of its digits is 4608, while the sum is 26.

The square root of 364224221 is about 19084.6593105562. The cubic root of 364224221 is about 714.1502748974.

Adding to 364224221 its reverse (122422463), we get a palindrome (486646684).

The spelling of 364224221 in words is "three hundred sixty-four million, two hundred twenty-four thousand, two hundred twenty-one".