52824021 has 4 divisors (see below), whose sum is σ = 70432032. Its totient is φ = 35216012.

The previous prime is 52824011. The next prime is 52824029. The reversal of 52824021 is 12042825.

52824021 is digitally balanced in base 2, 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 52824021 - 2⁵ = 52823989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 52823982 and 52824000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52824029) 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, 8804001 + ... + 8804006.

It is an arithmetic number, because the mean of its divisors is an integer number (17608008).

Almost surely, 2^52824021 is an apocalyptic number.

It is an amenable number.

52824021 is a deficient number, since it is larger than the sum of its proper divisors (17608011).

52824021 is a wasteful number, since it uses less digits than its factorization.

52824021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17608010.

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 52824021 is about 7268.0135525465. The cubic root of 52824021 is about 375.2123739257.

Adding to 52824021 its reverse (12042825), we get a palindrome (64866846).

The spelling of 52824021 in words is "fifty-two million, eight hundred twenty-four thousand, twenty-one".