5573444721 has 64 divisors (see below), whose sum is σ = 8463813120. Its totient is φ = 3238502400.

The previous prime is 5573444693. The next prime is 5573444729. The reversal of 5573444721 is 1274443755.

It is a de Polignac number, because none of the positive numbers 2^k-5573444721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5573444729) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11080156 + ... + 11080658.

It is an arithmetic number, because the mean of its divisors is an integer number (132247080).

Almost surely, 2^5573444721 is an apocalyptic number.

It is an amenable number.

5573444721 is a deficient number, since it is larger than the sum of its proper divisors (2890368399).

5573444721 is a wasteful number, since it uses less digits than its factorization.

5573444721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746.

The product of its digits is 470400, while the sum is 42.

The square root of 5573444721 is about 74655.5069703502. The cubic root of 5573444721 is about 1772.9965859960.

The spelling of 5573444721 in words is "five billion, five hundred seventy-three million, four hundred forty-four thousand, seven hundred twenty-one".