53332540 has 48 divisors (see below), whose sum is σ = 116367552. Its totient is φ = 20514816.

The previous prime is 53332523. The next prime is 53332541. The reversal of 53332540 is 4523335.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53332541) 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, 71409 + ... + 72151.

It is an arithmetic number, because the mean of its divisors is an integer number (2424324).

Almost surely, 2^53332540 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 53332540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58183776).

53332540 is an abundant number, since it is smaller than the sum of its proper divisors (63035012).

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

53332540 is a wasteful number, since it uses less digits than its factorization.

53332540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886 (or 884 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 25.

The square root of 53332540 is about 7302.9131173799. The cubic root of 53332540 is about 376.4125451550.

Adding to 53332540 its reverse (4523335), we get a palindrome (57855875).

The spelling of 53332540 in words is "fifty-three million, three hundred thirty-two thousand, five hundred forty".