52020520 has 32 divisors (see below), whose sum is σ = 120213000. Its totient is φ = 20245248.

The previous prime is 52020491. The next prime is 52020539. The reversal of 52020520 is 2502025.

It can be written as a sum of positive squares in 4 ways, for example, as 51638596 + 381924 = 7186^2 + 618^2 .

It is a super-2 number, since 2×52020520² = 5412269002140800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 52020494 and 52020503.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 16095 + ... + 19054.

Almost surely, 2^52020520 is an apocalyptic number.

It is an amenable number.

52020520 is an abundant number, since it is smaller than the sum of its proper divisors (68192480).

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

52020520 is a wasteful number, since it uses less digits than its factorization.

52020520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35197 (or 35193 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 16.

The square root of 52020520 is about 7212.5252165937. The cubic root of 52020520 is about 373.3002061025.

Adding to 52020520 its reverse (2502025), we get a palindrome (54522545).

The spelling of 52020520 in words is "fifty-two million, twenty thousand, five hundred twenty".