5478164621 has 4 divisors (see below), whose sum is σ = 5478363744. Its totient is φ = 5477965500.

The previous prime is 5478164603. The next prime is 5478164651. The reversal of 5478164621 is 1264618745.

5478164621 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 5478164621 - 2⁶ = 5478164557 is a prime.

It is a super-2 number, since 2×5478164621² = 60020575229552147282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5478164651) 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, 50105 + ... + 116046.

It is an arithmetic number, because the mean of its divisors is an integer number (1369590936).

Almost surely, 2^5478164621 is an apocalyptic number.

It is an amenable number.

5478164621 is a deficient number, since it is larger than the sum of its proper divisors (199123).

5478164621 is a wasteful number, since it uses less digits than its factorization.

5478164621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199122.

The product of its digits is 322560, while the sum is 44.

The square root of 5478164621 is about 74014.6243724847. The cubic root of 5478164621 is about 1762.8351151661.

The spelling of 5478164621 in words is "five billion, four hundred seventy-eight million, one hundred sixty-four thousand, six hundred twenty-one".