5505302821 has 2 divisors, whose sum is σ = 5505302822. Its totient is φ = 5505302820.

The previous prime is 5505302749. The next prime is 5505302827. The reversal of 5505302821 is 1282035055.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5114252196 + 391050625 = 71514^2 + 19775^2 .

It is a cyclic number.

It is not a de Polignac number, because 5505302821 - 2²⁵ = 5471748389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5505302827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2752651410 + 2752651411.

It is an arithmetic number, because the mean of its divisors is an integer number (2752651411).

Almost surely, 2^5505302821 is an apocalyptic number.

It is an amenable number.

5505302821 is a deficient number, since it is larger than the sum of its proper divisors (1).

5505302821 is an equidigital number, since it uses as much as digits as its factorization.

5505302821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12000, while the sum is 31.

The square root of 5505302821 is about 74197.7278695244. The cubic root of 5505302821 is about 1765.7412825709.

Adding to 5505302821 its reverse (1282035055), we get a palindrome (6787337876).

The spelling of 5505302821 in words is "five billion, five hundred five million, three hundred two thousand, eight hundred twenty-one".