53443332 has 18 divisors (see below), whose sum is σ = 135092958. Its totient is φ = 17814432.

The previous prime is 53443331. The next prime is 53443337. The reversal of 53443332 is 23334435.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 33942276 + 19501056 = 5826^2 + 4416^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 53443296 and 53443305.

It is not an unprimeable number, because it can be changed into a prime (53443331) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 742233 + ... + 742304.

Almost surely, 2^53443332 is an apocalyptic number.

It is an amenable number.

53443332 is an abundant number, since it is smaller than the sum of its proper divisors (81649626).

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

53443332 is a wasteful number, since it uses less digits than its factorization.

53443332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1484547 (or 1484542 counting only the distinct ones).

The product of its digits is 12960, while the sum is 27.

The square root of 53443332 is about 7310.4946481069. The cubic root of 53443332 is about 376.6730156168.

Adding to 53443332 its reverse (23334435), we get a palindrome (76777767).

The spelling of 53443332 in words is "fifty-three million, four hundred forty-three thousand, three hundred thirty-two".