53012864 has 32 divisors (see below), whose sum is σ = 106663440. Its totient is φ = 26242560.

The previous prime is 53012863. The next prime is 53012881. The reversal of 53012864 is 46821035.

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 (53012863) 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, 11174 + ... + 15194.

Almost surely, 2^53012864 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 53012864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53331720).

53012864 is an abundant number, since it is smaller than the sum of its proper divisors (53650576).

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

53012864 is a wasteful number, since it uses less digits than its factorization.

53012864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4138 (or 4126 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 53012864 is about 7280.9933388240. The cubic root of 53012864 is about 375.6589634416.

Adding to 53012864 its reverse (46821035), we get a palindrome (99833899).

The spelling of 53012864 in words is "fifty-three million, twelve thousand, eight hundred sixty-four".