3550409121 has 40 divisors (see below), whose sum is σ = 5541946560. Its totient is φ = 2021680416.

The previous prime is 3550409069. The next prime is 3550409131. The reversal of 3550409121 is 1219040553.

It is not a de Polignac number, because 3550409121 - 2¹⁰ = 3550408097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3550409131) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2585191 + ... + 2586563.

It is an arithmetic number, because the mean of its divisors is an integer number (138548664).

Almost surely, 2^3550409121 is an apocalyptic number.

It is an amenable number.

3550409121 is a deficient number, since it is larger than the sum of its proper divisors (1991537439).

3550409121 is an equidigital number, since it uses as much as digits as its factorization.

3550409121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1763 (or 1742 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 3550409121 is about 59585.3096073185. The cubic root of 3550409121 is about 1525.5489015382.

Adding to 3550409121 its reverse (1219040553), we get a palindrome (4769449674).

The spelling of 3550409121 in words is "three billion, five hundred fifty million, four hundred nine thousand, one hundred twenty-one".