52320864 has 48 divisors (see below), whose sum is σ = 137797632. Its totient is φ = 17382528.

The previous prime is 52320841. The next prime is 52320869. The reversal of 52320864 is 46802325.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52320869) 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, 36057 + ... + 37479.

It is an arithmetic number, because the mean of its divisors is an integer number (2870784).

Almost surely, 2^52320864 is an apocalyptic number.

It is an amenable number.

52320864 is an abundant number, since it is smaller than the sum of its proper divisors (85476768).

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

52320864 is a wasteful number, since it uses less digits than its factorization.

52320864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1819 (or 1811 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 52320864 is about 7233.3162519000. The cubic root of 52320864 is about 374.0172525809.

The spelling of 52320864 in words is "fifty-two million, three hundred twenty thousand, eight hundred sixty-four".