52431232 has 64 divisors (see below), whose sum is σ = 120441600. Its totient is φ = 22270464.

The previous prime is 52431229. The next prime is 52431263. The reversal of 52431232 is 23213425.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145869 + ... + 146227.

It is an arithmetic number, because the mean of its divisors is an integer number (1881900).

Almost surely, 2^52431232 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 52431232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60220800).

52431232 is an abundant number, since it is smaller than the sum of its proper divisors (68010368).

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

52431232 is a wasteful number, since it uses less digits than its factorization.

52431232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543 (or 531 counting only the distinct ones).

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

The square root of 52431232 is about 7240.9413752633. The cubic root of 52431232 is about 374.2800575202.

Adding to 52431232 its reverse (23213425), we get a palindrome (75644657).

The spelling of 52431232 in words is "fifty-two million, four hundred thirty-one thousand, two hundred thirty-two".