53581332 has 24 divisors (see below), whose sum is σ = 142883776. Its totient is φ = 15308928.

The previous prime is 53581327. The next prime is 53581337. The reversal of 53581332 is 23318535.

It is an interprime number because it is at equal distance from previous prime (53581327) and next prime (53581337).

It is a self number, because there is not a number n which added to its sum of digits gives 53581332.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53581337) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 318853 + ... + 319020.

Almost surely, 2^53581332 is an apocalyptic number.

It is an amenable number.

53581332 is an abundant number, since it is smaller than the sum of its proper divisors (89302444).

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

53581332 is a wasteful number, since it uses less digits than its factorization.

53581332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637887 (or 637885 counting only the distinct ones).

The product of its digits is 10800, while the sum is 30.

The square root of 53581332 is about 7319.9270488168. The cubic root of 53581332 is about 376.9969487566.

Adding to 53581332 its reverse (23318535), we get a palindrome (76899867).

The spelling of 53581332 in words is "fifty-three million, five hundred eighty-one thousand, three hundred thirty-two".