5445871221 has 12 divisors (see below), whose sum is σ = 8446657632. Its totient is φ = 3111926328.

The previous prime is 5445871201. The next prime is 5445871237. The reversal of 5445871221 is 1221785445.

It is not a de Polignac number, because 5445871221 - 2¹¹ = 5445869173 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 5445871221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5445871201) 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, 18523225 + ... + 18523518.

It is an arithmetic number, because the mean of its divisors is an integer number (703888136).

Almost surely, 2^5445871221 is an apocalyptic number.

It is an amenable number.

5445871221 is a deficient number, since it is larger than the sum of its proper divisors (3000786411).

5445871221 is a wasteful number, since it uses less digits than its factorization.

5445871221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37046760 (or 37046753 counting only the distinct ones).

The product of its digits is 89600, while the sum is 39.

The square root of 5445871221 is about 73796.1463831276. The cubic root of 5445871221 is about 1759.3643560508.

The spelling of 5445871221 in words is "five billion, four hundred forty-five million, eight hundred seventy-one thousand, two hundred twenty-one".