5478821 has 4 divisors (see below), whose sum is σ = 5767200. Its totient is φ = 5190444.

The previous prime is 5478817. The next prime is 5478827. The reversal of 5478821 is 1288745.

5478821 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 5478821 - 2² = 5478817 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 (5478827) 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, 144161 + ... + 144198.

It is an arithmetic number, because the mean of its divisors is an integer number (1441800).

Almost surely, 2^5478821 is an apocalyptic number.

It is an amenable number.

5478821 is a deficient number, since it is larger than the sum of its proper divisors (288379).

5478821 is a wasteful number, since it uses less digits than its factorization.

5478821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288378.

The product of its digits is 17920, while the sum is 35.

The square root of 5478821 is about 2340.6881466782. The cubic root of 5478821 is about 176.2905518414.

The spelling of 5478821 in words is "five million, four hundred seventy-eight thousand, eight hundred twenty-one".