3550221445 has 8 divisors (see below), whose sum is σ = 4267756440. Its totient is φ = 2835183360.

The previous prime is 3550221443. The next prime is 3550221461. The reversal of 3550221445 is 5441220553.

It can be written as a sum of positive squares in 4 ways, for example, as 339185889 + 3211035556 = 18417^2 + 56666^2 .

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

It is not a de Polignac number, because 3550221445 - 2¹ = 3550221443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3550221443) 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, 621096 + ... + 626785.

It is an arithmetic number, because the mean of its divisors is an integer number (533469555).

Almost surely, 2^3550221445 is an apocalyptic number.

It is an amenable number.

3550221445 is a deficient number, since it is larger than the sum of its proper divisors (717534995).

3550221445 is a wasteful number, since it uses less digits than its factorization.

3550221445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1248455.

The product of its (nonzero) digits is 24000, while the sum is 31.

The square root of 3550221445 is about 59583.7347352447. The cubic root of 3550221445 is about 1525.5220206962.

Adding to 3550221445 its reverse (5441220553), we get a palindrome (8991441998).

The spelling of 3550221445 in words is "three billion, five hundred fifty million, two hundred twenty-one thousand, four hundred forty-five".