52889720 has 128 divisors (see below), whose sum is σ = 140797440. Its totient is φ = 17694720.

The previous prime is 52889701. The next prime is 52889729. The reversal of 52889720 is 2798825.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52889729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 273944 + ... + 274136.

It is an arithmetic number, because the mean of its divisors is an integer number (1099980).

Almost surely, 2^52889720 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 52889720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70398720).

52889720 is an abundant number, since it is smaller than the sum of its proper divisors (87907720).

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

52889720 is a wasteful number, since it uses less digits than its factorization.

52889720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265 (or 261 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 52889720 is about 7272.5318837390. The cubic root of 52889720 is about 375.3678642030.

The spelling of 52889720 in words is "fifty-two million, eight hundred eighty-nine thousand, seven hundred twenty".