53553240 has 96 divisors (see below), whose sum is σ = 187452720. Its totient is φ = 13181184.

The previous prime is 53553217. The next prime is 53553271. The reversal of 53553240 is 4235535.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1042 + ... + 10401.

Almost surely, 2^53553240 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 53553240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93726360).

53553240 is an abundant number, since it is smaller than the sum of its proper divisors (133899480).

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

53553240 is a wasteful number, since it uses less digits than its factorization.

53553240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11473 (or 11466 counting only the distinct ones).

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

The square root of 53553240 is about 7318.0079256585. The cubic root of 53553240 is about 376.9310523628.

Adding to 53553240 its reverse (4235535), we get a palindrome (57788775).

The spelling of 53553240 in words is "fifty-three million, five hundred fifty-three thousand, two hundred forty".