53988820 has 48 divisors (see below), whose sum is σ = 119040768. Its totient is φ = 20528640.

The previous prime is 53988817. The next prime is 53988833. The reversal of 53988820 is 2888935.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110617 + ... + 111103.

It is an arithmetic number, because the mean of its divisors is an integer number (2480016).

Almost surely, 2^53988820 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 53988820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59520384).

53988820 is an abundant number, since it is smaller than the sum of its proper divisors (65051948).

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

53988820 is a wasteful number, since it uses less digits than its factorization.

53988820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760 (or 758 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 43.

The square root of 53988820 is about 7347.7084863242. The cubic root of 53988820 is about 377.9502281360.

The spelling of 53988820 in words is "fifty-three million, nine hundred eighty-eight thousand, eight hundred twenty".