5471424821 has 2 divisors, whose sum is σ = 5471424822. Its totient is φ = 5471424820.

The previous prime is 5471424797. The next prime is 5471424853. The reversal of 5471424821 is 1284241745.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2885193796 + 2586231025 = 53714^2 + 50855^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5471424821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5471424221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2735712410 + 2735712411.

It is an arithmetic number, because the mean of its divisors is an integer number (2735712411).

Almost surely, 2^5471424821 is an apocalyptic number.

It is an amenable number.

5471424821 is a deficient number, since it is larger than the sum of its proper divisors (1).

5471424821 is an equidigital number, since it uses as much as digits as its factorization.

5471424821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 71680, while the sum is 38.

The square root of 5471424821 is about 73969.0801686759. The cubic root of 5471424821 is about 1762.1118782953. Note that the first 3 decimals are identical.

The spelling of 5471424821 in words is "five billion, four hundred seventy-one million, four hundred twenty-four thousand, eight hundred twenty-one".