539521020 has 96 divisors (see below), whose sum is σ = 1699891200. Its totient is φ = 142039872.

The previous prime is 539520997. The next prime is 539521033. The reversal of 539521020 is 20125935.

539521020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36337 + ... + 48983.

It is an arithmetic number, because the mean of its divisors is an integer number (17707200).

Almost surely, 2^539521020 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 539521020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (849945600).

539521020 is an abundant number, since it is smaller than the sum of its proper divisors (1160370180).

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

539521020 is a wasteful number, since it uses less digits than its factorization.

539521020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12744 (or 12736 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 539521020 is about 23227.5917821887. The cubic root of 539521020 is about 814.0844449135.

Adding to 539521020 its reverse (20125935), we get a palindrome (559646955).

The spelling of 539521020 in words is "five hundred thirty-nine million, five hundred twenty-one thousand, twenty".