5230821 has 24 divisors (see below), whose sum is σ = 7632576. Its totient is φ = 3178560.

The previous prime is 5230789. The next prime is 5230829. The reversal of 5230821 is 1280325.

It is not a de Polignac number, because 5230821 - 2⁵ = 5230789 is a prime.

It is a super-2 number, since 2×5230821² = 54722976668082, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5230829) 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 23 ways as a sum of consecutive naturals, for example, 121626 + ... + 121668.

It is an arithmetic number, because the mean of its divisors is an integer number (318024).

Almost surely, 2^5230821 is an apocalyptic number.

It is an amenable number.

5230821 is a deficient number, since it is larger than the sum of its proper divisors (2401755).

5230821 is a wasteful number, since it uses less digits than its factorization.

5230821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153 (or 110 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 5230821 is about 2287.0988172792. The cubic root of 5230821 is about 173.5894336374.

The spelling of 5230821 in words is "five million, two hundred thirty thousand, eight hundred twenty-one".