53404432 has 10 divisors (see below), whose sum is σ = 103471118. Its totient is φ = 26702208.

The previous prime is 53404423. The next prime is 53404433. The reversal of 53404432 is 23440435.

It can be written as a sum of positive squares in only one way, i.e., 31539456 + 21864976 = 5616^2 + 4676^2 .

It is a junction number, because it is equal to n+sod(n) for n = 53404397 and 53404406.

It is not an unprimeable number, because it can be changed into a prime (53404433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1668873 + ... + 1668904.

Almost surely, 2^53404432 is an apocalyptic number.

It is an amenable number.

53404432 is a deficient number, since it is larger than the sum of its proper divisors (50066686).

53404432 is a wasteful number, since it uses less digits than its factorization.

53404432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3337785 (or 3337779 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 53404432 is about 7307.8336051117. The cubic root of 53404432 is about 376.5816032973.

Adding to 53404432 its reverse (23440435), we get a palindrome (76844867).

The spelling of 53404432 in words is "fifty-three million, four hundred four thousand, four hundred thirty-two".