53172532 has 36 divisors (see below), whose sum is σ = 112985824. Its totient is φ = 21444480.

The previous prime is 53172517. The next prime is 53172547. The reversal of 53172532 is 23527135.

53172532 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (53172517) and next prime (53172547).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 53172532.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 4807 + ... + 11377.

Almost surely, 2^53172532 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53172532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56492912).

53172532 is an abundant number, since it is smaller than the sum of its proper divisors (59813292).

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

53172532 is a wasteful number, since it uses less digits than its factorization.

53172532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6616 (or 6597 counting only the distinct ones).

The product of its digits is 6300, while the sum is 28.

The square root of 53172532 is about 7291.9498078360. The cubic root of 53172532 is about 376.0357310996.

Adding to 53172532 its reverse (23527135), we get a palindrome (76699667).

The spelling of 53172532 in words is "fifty-three million, one hundred seventy-two thousand, five hundred thirty-two".