53335040 has 88 divisors (see below), whose sum is σ = 139720032. Its totient is φ = 19374080.

The previous prime is 53335039. The next prime is 53335049. The reversal of 53335040 is 4053335.

It is a tau number, because it is divible by the number of its divisors (88).

It is a junction number, because it is equal to n+sod(n) for n = 53334997 and 53335015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53335049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55847 + ... + 56793.

Almost surely, 2^53335040 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 53335040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69860016).

53335040 is an abundant number, since it is smaller than the sum of its proper divisors (86384992).

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

53335040 is a wasteful number, since it uses less digits than its factorization.

53335040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983 (or 965 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 23.

The square root of 53335040 is about 7303.0842799464. The cubic root of 53335040 is about 376.4184265966.

Adding to 53335040 its reverse (4053335), we get a palindrome (57388375).

The spelling of 53335040 in words is "fifty-three million, three hundred thirty-five thousand, forty".