5523441821 has 2 divisors, whose sum is σ = 5523441822. Its totient is φ = 5523441820.

The previous prime is 5523441817. The next prime is 5523441823. The reversal of 5523441821 is 1281443255.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5301878596 + 221563225 = 72814^2 + 14885^2 .

It is a cyclic number.

It is not a de Polignac number, because 5523441821 - 2² = 5523441817 is a prime.

It is a Sophie Germain prime.

Together with 5523441823, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5523441823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2761720910 + 2761720911.

It is an arithmetic number, because the mean of its divisors is an integer number (2761720911).

Almost surely, 2^5523441821 is an apocalyptic number.

It is an amenable number.

5523441821 is a deficient number, since it is larger than the sum of its proper divisors (1).

5523441821 is an equidigital number, since it uses as much as digits as its factorization.

5523441821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38400, while the sum is 35.

The square root of 5523441821 is about 74319.8615512704. The cubic root of 5523441821 is about 1767.6784251176.

The spelling of 5523441821 in words is "five billion, five hundred twenty-three million, four hundred forty-one thousand, eight hundred twenty-one".