52321920 has 256 divisors, whose sum is σ = 202694400. Its totient is φ = 11206656.

The previous prime is 52321909. The next prime is 52321921. The reversal of 52321920 is 2912325.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (52321921) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 228366 + ... + 228594.

It is an arithmetic number, because the mean of its divisors is an integer number (791775).

Almost surely, 2^52321920 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 52321920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101347200).

52321920 is an abundant number, since it is smaller than the sum of its proper divisors (150372480).

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

52321920 is a wasteful number, since it uses less digits than its factorization.

52321920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275 (or 263 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 52321920 is about 7233.3892470957. The cubic root of 52321920 is about 374.0197688465.

The spelling of 52321920 in words is "fifty-two million, three hundred twenty-one thousand, nine hundred twenty".