5450247821 has 12 divisors (see below), whose sum is σ = 5792445300. Its totient is φ = 5127221760.

The previous prime is 5450247773. The next prime is 5450247823. The reversal of 5450247821 is 1287420545.

It can be written as a sum of positive squares in 6 ways, for example, as 50055625 + 5400192196 = 7075^2 + 73486^2 .

It is not a de Polignac number, because 5450247821 - 2³⁰ = 4376505997 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 (5450247823) 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, 997505 + ... + 1002953.

It is an arithmetic number, because the mean of its divisors is an integer number (482703775).

Almost surely, 2^5450247821 is an apocalyptic number.

It is an amenable number.

5450247821 is a deficient number, since it is larger than the sum of its proper divisors (342197479).

5450247821 is a wasteful number, since it uses less digits than its factorization.

5450247821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8944 (or 8927 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 38.

The square root of 5450247821 is about 73825.7937376904. The cubic root of 5450247821 is about 1759.8355369954.

The spelling of 5450247821 in words is "five billion, four hundred fifty million, two hundred forty-seven thousand, eight hundred twenty-one".