52133440 has 28 divisors (see below), whose sum is σ = 124143516. Its totient is φ = 20853248.

The previous prime is 52133401. The next prime is 52133447. The reversal of 52133440 is 4433125.

52133440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 36578304 + 15555136 = 6048^2 + 3944^2 .

It is not an unprimeable number, because it can be changed into a prime (52133447) 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 3 ways as a sum of consecutive naturals, for example, 81139 + ... + 81778.

It is an arithmetic number, because the mean of its divisors is an integer number (4433697).

Almost surely, 2^52133440 is an apocalyptic number.

It is an amenable number.

52133440 is an abundant number, since it is smaller than the sum of its proper divisors (72010076).

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

52133440 is a wasteful number, since it uses less digits than its factorization.

52133440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162934 (or 162924 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 52133440 is about 7220.3490220349. The cubic root of 52133440 is about 373.5701162310.

Adding to 52133440 its reverse (4433125), we get a palindrome (56566565).

The spelling of 52133440 in words is "fifty-two million, one hundred thirty-three thousand, four hundred forty".