3550443220 has 24 divisors (see below), whose sum is σ = 7512851808. Its totient is φ = 1409335200.

The previous prime is 3550443209. The next prime is 3550443263. The reversal of 3550443220 is 223440553.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 674946 + ... + 680185.

It is an arithmetic number, because the mean of its divisors is an integer number (313035492).

Almost surely, 2^3550443220 is an apocalyptic number.

It is an amenable number.

3550443220 is an abundant number, since it is smaller than the sum of its proper divisors (3962408588).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3550443220 is a wasteful number, since it uses less digits than its factorization.

3550443220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1355271 (or 1355269 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 28.

The square root of 3550443220 is about 59585.5957425954. The cubic root of 3550443220 is about 1525.5537854379.

Adding to 3550443220 its reverse (223440553), we get a palindrome (3773883773).

The spelling of 3550443220 in words is "three billion, five hundred fifty million, four hundred forty-three thousand, two hundred twenty".