53302821 has 16 divisors (see below), whose sum is σ = 83496000. Its totient is φ = 29819520.

The previous prime is 53302817. The next prime is 53302831. The reversal of 53302821 is 12820335.

53302821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 53302821 - 2² = 53302817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 53302791 and 53302800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53302831) 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 15 ways as a sum of consecutive naturals, for example, 61696 + ... + 62553.

It is an arithmetic number, because the mean of its divisors is an integer number (5218500).

Almost surely, 2^53302821 is an apocalyptic number.

It is an amenable number.

53302821 is a deficient number, since it is larger than the sum of its proper divisors (30193179).

53302821 is a wasteful number, since it uses less digits than its factorization.

53302821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124276.

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

The square root of 53302821 is about 7300.8780978729. The cubic root of 53302821 is about 376.3426148464.

The spelling of 53302821 in words is "fifty-three million, three hundred two thousand, eight hundred twenty-one".