53509332 has 24 divisors (see below), whose sum is σ = 124975872. Its totient is φ = 17819200.

The previous prime is 53509331. The next prime is 53509343. The reversal of 53509332 is 23390535.

53509332 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×53509332² = 5726497222172448, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 53509332.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53509331) 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 7 ways as a sum of consecutive naturals, for example, 19357 + ... + 21947.

It is an arithmetic number, because the mean of its divisors is an integer number (5207328).

Almost surely, 2^53509332 is an apocalyptic number.

It is an amenable number.

53509332 is an abundant number, since it is smaller than the sum of its proper divisors (71466540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53509332 is a wasteful number, since it uses less digits than its factorization.

53509332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4319 (or 4317 counting only the distinct ones).

The product of its (nonzero) digits is 12150, while the sum is 30.

The square root of 53509332 is about 7315.0073137352. The cubic root of 53509332 is about 376.8280096470.

Adding to 53509332 its reverse (23390535), we get a palindrome (76899867).

The spelling of 53509332 in words is "fifty-three million, five hundred nine thousand, three hundred thirty-two".