363550221 has 8 divisors (see below), whose sum is σ = 538592960. Its totient is φ = 242366796.

The previous prime is 363550211. The next prime is 363550223. The reversal of 363550221 is 122055363.

363550221 is a `hidden beast` number, since 3 + 635 + 5 + 0 + 2 + 21 = 666.

It is not a de Polignac number, because 363550221 - 2¹¹ = 363548173 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 13464823 = 363550221 / (3 + 6 + 3 + 5 + 5 + 0 + 2 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (363550223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6732385 + ... + 6732438.

It is an arithmetic number, because the mean of its divisors is an integer number (67324120).

Almost surely, 2^363550221 is an apocalyptic number.

It is an amenable number.

363550221 is a deficient number, since it is larger than the sum of its proper divisors (175042739).

363550221 is a wasteful number, since it uses less digits than its factorization.

363550221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13464832 (or 13464826 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 363550221 is about 19066.9929721495. The cubic root of 363550221 is about 713.7094891860.

The spelling of 363550221 in words is "three hundred sixty-three million, five hundred fifty thousand, two hundred twenty-one".