53115132 has 24 divisors (see below), whose sum is σ = 141640576. Its totient is φ = 15175728.

The previous prime is 53115113. The next prime is 53115137. The reversal of 53115132 is 23151135.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 53115099 and 53115108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53115137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 316078 + ... + 316245.

Almost surely, 2^53115132 is an apocalyptic number.

It is an amenable number.

53115132 is an abundant number, since it is smaller than the sum of its proper divisors (88525444).

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

53115132 is a wasteful number, since it uses less digits than its factorization.

53115132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632337 (or 632335 counting only the distinct ones).

The product of its digits is 450, while the sum is 21.

The square root of 53115132 is about 7288.0128979030. The cubic root of 53115132 is about 375.9003715969.

Adding to 53115132 its reverse (23151135), we get a palindrome (76266267).

The spelling of 53115132 in words is "fifty-three million, one hundred fifteen thousand, one hundred thirty-two".