53538816 has 52 divisors (see below), whose sum is σ = 142785512. Its totient is φ = 17842176.

The previous prime is 53538803. The next prime is 53538833. The reversal of 53538816 is 61883535.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10110 + ... + 14466.

Almost surely, 2^53538816 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 53538816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71392756).

53538816 is an abundant number, since it is smaller than the sum of its proper divisors (89246696).

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

53538816 is an equidigital number, since it uses as much as digits as its factorization.

53538816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4384 (or 4362 counting only the distinct ones).

The product of its digits is 86400, while the sum is 39.

The square root of 53538816 is about 7317.0223451893. The cubic root of 53538816 is about 376.8972085238.

The spelling of 53538816 in words is "fifty-three million, five hundred thirty-eight thousand, eight hundred sixteen".