5501613821 has 4 divisors (see below), whose sum is σ = 6001760544. Its totient is φ = 5001467100.

The previous prime is 5501613787. The next prime is 5501613839. The reversal of 5501613821 is 1283161055.

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 5501613821 - 2¹⁰ = 5501612797 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 (5501613421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250073345 + ... + 250073366.

It is an arithmetic number, because the mean of its divisors is an integer number (1500440136).

Almost surely, 2^5501613821 is an apocalyptic number.

It is an amenable number.

5501613821 is a deficient number, since it is larger than the sum of its proper divisors (500146723).

5501613821 is a wasteful number, since it uses less digits than its factorization.

5501613821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500146722.

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 5501613821 is about 74172.8644519005. The cubic root of 5501613821 is about 1765.3467977579.

Adding to 5501613821 its reverse (1283161055), we get a palindrome (6784774876).

The spelling of 5501613821 in words is "five billion, five hundred one million, six hundred thirteen thousand, eight hundred twenty-one".