53443312 has 20 divisors (see below), whose sum is σ = 111511960. Its totient is φ = 24666048.

The previous prime is 53443307. The next prime is 53443331. The reversal of 53443312 is 21334435.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128262 + ... + 128677.

It is an arithmetic number, because the mean of its divisors is an integer number (5575598).

Almost surely, 2^53443312 is an apocalyptic number.

53443312 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

53443312 is an abundant number, since it is smaller than the sum of its proper divisors (58068648).

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

53443312 is a wasteful number, since it uses less digits than its factorization.

53443312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256960 (or 256954 counting only the distinct ones).

The product of its digits is 4320, while the sum is 25.

The square root of 53443312 is about 7310.4932802103. The cubic root of 53443312 is about 376.6729686296.

Adding to 53443312 its reverse (21334435), we get a palindrome (74777747).

The spelling of 53443312 in words is "fifty-three million, four hundred forty-three thousand, three hundred twelve".