53525440 has 28 divisors (see below), whose sum is σ = 127458216. Its totient is φ = 21410048.

The previous prime is 53525371. The next prime is 53525441. The reversal of 53525440 is 4452535.

It is a junction number, because it is equal to n+sod(n) for n = 53525399 and 53525408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53525441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83314 + ... + 83953.

Almost surely, 2^53525440 is an apocalyptic number.

It is an amenable number.

53525440 is an abundant number, since it is smaller than the sum of its proper divisors (73932776).

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

53525440 is a wasteful number, since it uses less digits than its factorization.

53525440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167284 (or 167274 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 28.

The square root of 53525440 is about 7316.1082550766. The cubic root of 53525440 is about 376.8658182333.

Adding to 53525440 its reverse (4452535), we get a palindrome (57977975).

The spelling of 53525440 in words is "fifty-three million, five hundred twenty-five thousand, four hundred forty".