52509870 has 160 divisors (see below), whose sum is σ = 165371040. Its totient is φ = 12002256.

The previous prime is 52509859. The next prime is 52509871. The reversal of 52509870 is 7890525.

52509870 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52509871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 7501407 + ... + 7501413.

It is an arithmetic number, because the mean of its divisors is an integer number (1033569).

Almost surely, 2^52509870 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52509870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82685520).

52509870 is an abundant number, since it is smaller than the sum of its proper divisors (112861170).

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

52509870 is an frugal number, since it uses more digits than its factorization.

52509870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56 (or 17 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The square root of 52509870 is about 7246.3694357933. The cubic root of 52509870 is about 374.4670830241.

The spelling of 52509870 in words is "fifty-two million, five hundred nine thousand, eight hundred seventy".