53011328 has 32 divisors (see below), whose sum is σ = 106414560. Its totient is φ = 26303488.

The previous prime is 53011327. The next prime is 53011339. The reversal of 53011328 is 82311035.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53011327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16025 + ... + 19047.

It is an arithmetic number, because the mean of its divisors is an integer number (3325455).

Almost surely, 2^53011328 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 53011328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53207280).

53011328 is an abundant number, since it is smaller than the sum of its proper divisors (53403232).

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

53011328 is a wasteful number, since it uses less digits than its factorization.

53011328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3174 (or 3162 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 53011328 is about 7280.8878579470. The cubic root of 53011328 is about 375.6553352799.

The spelling of 53011328 in words is "fifty-three million, eleven thousand, three hundred twenty-eight".