52132440 has 32 divisors (see below), whose sum is σ = 156397680. Its totient is φ = 13901952.

The previous prime is 52132427. The next prime is 52132441. The reversal of 52132440 is 4423125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52132441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 217099 + ... + 217338.

Almost surely, 2^52132440 is an apocalyptic number.

It is an amenable number.

52132440 is an abundant number, since it is smaller than the sum of its proper divisors (104265240).

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

52132440 is a wasteful number, since it uses less digits than its factorization.

52132440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434451 (or 434447 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 52132440 is about 7220.2797729728. The cubic root of 52132440 is about 373.5677276649.

Adding to 52132440 its reverse (4423125), we get a palindrome (56555565).

The spelling of 52132440 in words is "fifty-two million, one hundred thirty-two thousand, four hundred forty".