53332521 has 16 divisors (see below), whose sum is σ = 77700288. Its totient is φ = 32270400.

The previous prime is 53332471. The next prime is 53332523. The reversal of 53332521 is 12523335.

It is a happy number.

53332521 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 53332521 - 2¹³ = 53324329 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 53332491 and 53332500.

It is not an unprimeable number, because it can be changed into a prime (53332523) 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, 32091 + ... + 33711.

It is an arithmetic number, because the mean of its divisors is an integer number (4856268).

Almost surely, 2^53332521 is an apocalyptic number.

It is an amenable number.

53332521 is a deficient number, since it is larger than the sum of its proper divisors (24367767).

53332521 is a wasteful number, since it uses less digits than its factorization.

53332521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2632.

The product of its digits is 2700, while the sum is 24.

The square root of 53332521 is about 7302.9118165291. The cubic root of 53332521 is about 376.4125004554.

Adding to 53332521 its reverse (12523335), we get a palindrome (65855856).

The spelling of 53332521 in words is "fifty-three million, three hundred thirty-two thousand, five hundred twenty-one".