53072532 has 54 divisors (see below), whose sum is σ = 137664254. Its totient is φ = 17239680.

The previous prime is 53072519. The next prime is 53072549. The reversal of 53072532 is 23527035.

It can be written as a sum of positive squares in 3 ways, for example, as 15876 + 53056656 = 126^2 + 7284^2 .

It is a junction number, because it is equal to n+sod(n) for n = 53072496 and 53072505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 60078 + ... + 60954.

Almost surely, 2^53072532 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 53072532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68832127).

53072532 is an abundant number, since it is smaller than the sum of its proper divisors (84591722).

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

53072532 is a wasteful number, since it uses less digits than its factorization.

53072532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969 (or 923 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 27.

The square root of 53072532 is about 7285.0897043207. The cubic root of 53072532 is about 375.7998500933.

Adding to 53072532 its reverse (23527035), we get a palindrome (76599567).

The spelling of 53072532 in words is "fifty-three million, seventy-two thousand, five hundred thirty-two".