53433540 has 96 divisors (see below), whose sum is σ = 169464960. Its totient is φ = 13972608.

The previous prime is 53433539. The next prime is 53433547. The reversal of 53433540 is 4533435.

It is a happy number.

53433540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (53433547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27687 + ... + 29553.

It is an arithmetic number, because the mean of its divisors is an integer number (1765260).

Almost surely, 2^53433540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53433540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84732480).

53433540 is an abundant number, since it is smaller than the sum of its proper divisors (116031420).

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

53433540 is a wasteful number, since it uses less digits than its factorization.

53433540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1938 (or 1930 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 27.

The square root of 53433540 is about 7309.8248953036. The cubic root of 53433540 is about 376.6500092702.

Adding to 53433540 its reverse (4533435), we get a palindrome (57966975).

The spelling of 53433540 in words is "fifty-three million, four hundred thirty-three thousand, five hundred forty".