3550221243 has 12 divisors (see below), whose sum is σ = 5180965608. Its totient is φ = 2342413440.

The previous prime is 3550221229. The next prime is 3550221253. The reversal of 3550221243 is 3421220553.

It is a happy number.

3550221243 is a `hidden beast` number, since 35 + 502 + 2 + 124 + 3 = 666.

It is not a de Polignac number, because 3550221243 - 2⁶ = 3550221179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3550221253) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2032473 + ... + 2034218.

It is an arithmetic number, because the mean of its divisors is an integer number (431747134).

Almost surely, 2^3550221243 is an apocalyptic number.

3550221243 is a deficient number, since it is larger than the sum of its proper divisors (1630744365).

3550221243 is a wasteful number, since it uses less digits than its factorization.

3550221243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4066794 (or 4066791 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 3550221243 is about 59583.7330401512. The cubic root of 3550221243 is about 1525.5219917632.

Adding to 3550221243 its reverse (3421220553), we get a palindrome (6971441796).

The spelling of 3550221243 in words is "three billion, five hundred fifty million, two hundred twenty-one thousand, two hundred forty-three".