5221521349 has 12 divisors (see below), whose sum is σ = 5798539852. Its totient is φ = 4697890560.

The previous prime is 5221521317. The next prime is 5221521397. The reversal of 5221521349 is 9431251225.

It can be written as a sum of positive squares in 2 ways, for example, as 3478876324 + 1742645025 = 58982^2 + 41745^2 .

It is not a de Polignac number, because 5221521349 - 2⁵ = 5221521317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5221522349) 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, 210702 + ... + 234175.

Almost surely, 2^5221521349 is an apocalyptic number.

It is an amenable number.

5221521349 is a deficient number, since it is larger than the sum of its proper divisors (577018503).

5221521349 is a wasteful number, since it uses less digits than its factorization.

5221521349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444996 (or 444985 counting only the distinct ones).

The product of its digits is 21600, while the sum is 34.

The square root of 5221521349 is about 72260.0951355587. The cubic root of 5221521349 is about 1734.8650022445.

The spelling of 5221521349 in words is "five billion, two hundred twenty-one million, five hundred twenty-one thousand, three hundred forty-nine".