52431240 has 64 divisors (see below), whose sum is σ = 157772160. Its totient is φ = 13939200.

The previous prime is 52431229. The next prime is 52431263. The reversal of 52431240 is 4213425.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71757 + ... + 72483.

It is an arithmetic number, because the mean of its divisors is an integer number (2465190).

Almost surely, 2^52431240 is an apocalyptic number.

It is an amenable number.

52431240 is an abundant number, since it is smaller than the sum of its proper divisors (105340920).

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

52431240 is a wasteful number, since it uses less digits than its factorization.

52431240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1342 (or 1338 counting only the distinct ones).

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

The square root of 52431240 is about 7240.9419276776. The cubic root of 52431240 is about 374.2800765562.

Adding to 52431240 its reverse (4213425), we get a palindrome (56644665).

The spelling of 52431240 in words is "fifty-two million, four hundred thirty-one thousand, two hundred forty".