52330821 has 16 divisors (see below), whose sum is σ = 72780288. Its totient is φ = 33408000.

The previous prime is 52330793. The next prime is 52330823. The reversal of 52330821 is 12803325.

It is not a de Polignac number, because 52330821 - 2¹⁸ = 52068677 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 52330791 and 52330800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52330823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6121 + ... + 11921.

It is an arithmetic number, because the mean of its divisors is an integer number (4548768).

Almost surely, 2^52330821 is an apocalyptic number.

It is an amenable number.

52330821 is a deficient number, since it is larger than the sum of its proper divisors (20449467).

52330821 is a wasteful number, since it uses less digits than its factorization.

52330821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5932.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 52330821 is about 7234.0044926721. The cubic root of 52330821 is about 374.0409770462.

The spelling of 52330821 in words is "fifty-two million, three hundred thirty thousand, eight hundred twenty-one".