53131332 has 12 divisors (see below), whose sum is σ = 123973136. Its totient is φ = 17710440.

The previous prime is 53131327. The next prime is 53131349. The reversal of 53131332 is 23313135.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 53131299 and 53131308.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2213794 + ... + 2213817.

Almost surely, 2^53131332 is an apocalyptic number.

It is an amenable number.

53131332 is an abundant number, since it is smaller than the sum of its proper divisors (70841804).

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

53131332 is a wasteful number, since it uses less digits than its factorization.

53131332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4427618 (or 4427616 counting only the distinct ones).

The product of its digits is 810, while the sum is 21.

The square root of 53131332 is about 7289.1242272306. The cubic root of 53131332 is about 375.9385839782.

Adding to 53131332 its reverse (23313135), we get a palindrome (76444467).

It can be divided in two parts, 5313133 and 2, that added together give a palindrome (5313135).

The spelling of 53131332 in words is "fifty-three million, one hundred thirty-one thousand, three hundred thirty-two".