52636864 has 56 divisors (see below), whose sum is σ = 120079008. Its totient is φ = 22425600.

The previous prime is 52636861. The next prime is 52636873. The reversal of 52636864 is 46863625.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (56).

It is not an unprimeable number, because it can be changed into a prime (52636861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131064 + ... + 131464.

It is an arithmetic number, because the mean of its divisors is an integer number (2144268).

Almost surely, 2^52636864 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 52636864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60039504).

52636864 is an abundant number, since it is smaller than the sum of its proper divisors (67442144).

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

52636864 is a wasteful number, since it uses less digits than its factorization.

52636864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713 (or 703 counting only the distinct ones).

The product of its digits is 207360, while the sum is 40.

The square root of 52636864 is about 7255.1267390722. The cubic root of 52636864 is about 374.7687202032.

The spelling of 52636864 in words is "fifty-two million, six hundred thirty-six thousand, eight hundred sixty-four".