52845720 has 128 divisors (see below), whose sum is σ = 169827840. Its totient is φ = 13122560.

The previous prime is 52845713. The next prime is 52845721. The reversal of 52845720 is 2754825.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52845721) 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, 112927 + ... + 113393.

It is an arithmetic number, because the mean of its divisors is an integer number (1326780).

Almost surely, 2^52845720 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 52845720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84913920).

52845720 is an abundant number, since it is smaller than the sum of its proper divisors (116982120).

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

52845720 is a wasteful number, since it uses less digits than its factorization.

52845720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545 (or 541 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 33.

The square root of 52845720 is about 7269.5061730492. The cubic root of 52845720 is about 375.2637433506.

The spelling of 52845720 in words is "fifty-two million, eight hundred forty-five thousand, seven hundred twenty".