5521344821 has 4 divisors (see below), whose sum is σ = 5547512544. Its totient is φ = 5495177100.

The previous prime is 5521344811. The next prime is 5521344823. The reversal of 5521344821 is 1284431255.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5521344821 - 2¹⁰ = 5521343797 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 (5521344823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13083545 + ... + 13083966.

It is an arithmetic number, because the mean of its divisors is an integer number (1386878136).

Almost surely, 2^5521344821 is an apocalyptic number.

It is an amenable number.

5521344821 is a deficient number, since it is larger than the sum of its proper divisors (26167723).

5521344821 is a wasteful number, since it uses less digits than its factorization.

5521344821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26167722.

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

The square root of 5521344821 is about 74305.7522739660. The cubic root of 5521344821 is about 1767.4546943968.

The spelling of 5521344821 in words is "five billion, five hundred twenty-one million, three hundred forty-four thousand, eight hundred twenty-one".