53145532 has 48 divisors (see below), whose sum is σ = 107089920. Its totient is φ = 22852800.

The previous prime is 53145517. The next prime is 53145577. The reversal of 53145532 is 23554135.

It is a self number, because there is not a number n which added to its sum of digits gives 53145532.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63694 + ... + 64522.

It is an arithmetic number, because the mean of its divisors is an integer number (2231040).

Almost surely, 2^53145532 is an apocalyptic number.

It is an amenable number.

53145532 is an abundant number, since it is smaller than the sum of its proper divisors (53944388).

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

53145532 is a wasteful number, since it uses less digits than its factorization.

53145532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 922 (or 920 counting only the distinct ones).

The product of its digits is 9000, while the sum is 28.

The square root of 53145532 is about 7290.0982160736. The cubic root of 53145532 is about 375.9720723938.

Adding to 53145532 its reverse (23554135), we get a palindrome (76699667).

The spelling of 53145532 in words is "fifty-three million, one hundred forty-five thousand, five hundred thirty-two".