53505432 has 24 divisors (see below), whose sum is σ = 144910740. Its totient is φ = 17835120.

The previous prime is 53505379. The next prime is 53505433. The reversal of 53505432 is 23450535.

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 53505396 and 53505405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53505433) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 371494 + ... + 371637.

Almost surely, 2^53505432 is an apocalyptic number.

It is an amenable number.

53505432 is an abundant number, since it is smaller than the sum of its proper divisors (91405308).

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

53505432 is a wasteful number, since it uses less digits than its factorization.

53505432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743143 (or 743136 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 27.

The square root of 53505432 is about 7314.7407336146. The cubic root of 53505432 is about 376.8188544530.

Adding to 53505432 its reverse (23450535), we get a palindrome (76955967).

The spelling of 53505432 in words is "fifty-three million, five hundred five thousand, four hundred thirty-two".