53432240 has 20 divisors (see below), whose sum is σ = 124230144. Its totient is φ = 21372864.

The previous prime is 53432231. The next prime is 53432263. The reversal of 53432240 is 4223435.

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 333872 + ... + 334031.

Almost surely, 2^53432240 is an apocalyptic number.

It is an amenable number.

53432240 is an abundant number, since it is smaller than the sum of its proper divisors (70797904).

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

53432240 is a wasteful number, since it uses less digits than its factorization.

53432240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667916 (or 667910 counting only the distinct ones).

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

The square root of 53432240 is about 7309.7359733440. The cubic root of 53432240 is about 376.6469547032.

Adding to 53432240 its reverse (4223435), we get a palindrome (57655675).

The spelling of 53432240 in words is "fifty-three million, four hundred thirty-two thousand, two hundred forty".