53325240 has 64 divisors (see below), whose sum is σ = 161805600. Its totient is φ = 14057472.

The previous prime is 53325227. The next prime is 53325241. The reversal of 53325240 is 4252335.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 53325240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53325241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8184 + ... + 13176.

Almost surely, 2^53325240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53325240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80902800).

53325240 is an abundant number, since it is smaller than the sum of its proper divisors (108480360).

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

53325240 is a wasteful number, since it uses less digits than its factorization.

53325240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5096 (or 5092 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 24.

The square root of 53325240 is about 7302.4132997250. The cubic root of 53325240 is about 376.3953702936.

Adding to 53325240 its reverse (4252335), we get a palindrome (57577575).

The spelling of 53325240 in words is "fifty-three million, three hundred twenty-five thousand, two hundred forty".