53232440 has 32 divisors (see below), whose sum is σ = 126820080. Its totient is φ = 20040192.

The previous prime is 53232437. The next prime is 53232449. The reversal of 53232440 is 4423235.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53232449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38462 + ... + 39821.

Almost surely, 2^53232440 is an apocalyptic number.

It is an amenable number.

53232440 is an abundant number, since it is smaller than the sum of its proper divisors (73587640).

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

53232440 is a wasteful number, since it uses less digits than its factorization.

53232440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78311 (or 78307 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 53232440 is about 7296.0564690797. The cubic root of 53232440 is about 376.1769010649.

Adding to 53232440 its reverse (4423235), we get a palindrome (57655675).

The spelling of 53232440 in words is "fifty-three million, two hundred thirty-two thousand, four hundred forty".