52020612 has 72 divisors (see below), whose sum is σ = 159134976. Its totient is φ = 13987584.

The previous prime is 52020607. The next prime is 52020643. The reversal of 52020612 is 21602025.

52020612 is a `hidden beast` number, since 52 + 0 + 2 + 0 + 612 = 666.

It is a super-2 number, since 2×52020612² = 5412288145709088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 23 ways as a sum of consecutive naturals, for example, 1788 + ... + 10355.

It is an arithmetic number, because the mean of its divisors is an integer number (2210208).

Almost surely, 2^52020612 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 52020612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79567488).

52020612 is an abundant number, since it is smaller than the sum of its proper divisors (107114364).

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

52020612 is a wasteful number, since it uses less digits than its factorization.

52020612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12177 (or 12172 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 52020612 is about 7212.5315943849. The cubic root of 52020612 is about 373.3004261670.

Adding to 52020612 its reverse (21602025), we get a palindrome (73622637).

The spelling of 52020612 in words is "fifty-two million, twenty thousand, six hundred twelve".