52385970 has 128 divisors (see below), whose sum is σ = 159989760. Its totient is φ = 10679040.

The previous prime is 52385953. The next prime is 52385999. The reversal of 52385970 is 7958325.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 84321 + ... + 84939.

It is an arithmetic number, because the mean of its divisors is an integer number (1249920).

Almost surely, 2^52385970 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52385970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79994880).

52385970 is an abundant number, since it is smaller than the sum of its proper divisors (107603790).

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

52385970 is a wasteful number, since it uses less digits than its factorization.

52385970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680.

The product of its (nonzero) digits is 75600, while the sum is 39.

The square root of 52385970 is about 7237.8152781071. The cubic root of 52385970 is about 374.1723256690.

The spelling of 52385970 in words is "fifty-two million, three hundred eighty-five thousand, nine hundred seventy".