52221824 has 64 divisors (see below), whose sum is σ = 111702240. Its totient is φ = 24231936.

The previous prime is 52221803. The next prime is 52221839. The reversal of 52221824 is 42812225.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 52221793 and 52221802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224012 + ... + 224244.

Almost surely, 2^52221824 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 52221824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55851120).

52221824 is an abundant number, since it is smaller than the sum of its proper divisors (59480416).

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

52221824 is a wasteful number, since it uses less digits than its factorization.

52221824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367 (or 355 counting only the distinct ones).

The product of its digits is 2560, while the sum is 26.

The square root of 52221824 is about 7226.4669099083. The cubic root of 52221824 is about 373.7811067200.

The spelling of 52221824 in words is "fifty-two million, two hundred twenty-one thousand, eight hundred twenty-four".