3555164221 has 8 divisors (see below), whose sum is σ = 4064659200. Its totient is φ = 3046072848.

The previous prime is 3555164159. The next prime is 3555164237. The reversal of 3555164221 is 1224615553.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3555164221 - 2¹¹ = 3555162173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3555164281) 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 in 7 ways as a sum of consecutive naturals, for example, 81781 + ... + 117466.

It is an arithmetic number, because the mean of its divisors is an integer number (508082400).

Almost surely, 2^3555164221 is an apocalyptic number.

It is an amenable number.

3555164221 is a deficient number, since it is larger than the sum of its proper divisors (509494979).

3555164221 is a wasteful number, since it uses less digits than its factorization.

3555164221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201803.

The product of its digits is 36000, while the sum is 34.

The square root of 3555164221 is about 59625.1978696926. The cubic root of 3555164221 is about 1526.2296589034.

Adding to 3555164221 its reverse (1224615553), we get a palindrome (4779779774).

The spelling of 3555164221 in words is "three billion, five hundred fifty-five million, one hundred sixty-four thousand, two hundred twenty-one".