52566620 has 12 divisors (see below), whose sum is σ = 110389944. Its totient is φ = 21026640.

The previous prime is 52566593. The next prime is 52566623. The reversal of 52566620 is 2666525.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52566623) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1314146 + ... + 1314185.

It is an arithmetic number, because the mean of its divisors is an integer number (9199162).

Almost surely, 2^52566620 is an apocalyptic number.

It is an amenable number.

52566620 is an abundant number, since it is smaller than the sum of its proper divisors (57823324).

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

52566620 is a wasteful number, since it uses less digits than its factorization.

52566620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2628340 (or 2628338 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 52566620 is about 7250.2841323634. The cubic root of 52566620 is about 374.6019361218.

The spelling of 52566620 in words is "fifty-two million, five hundred sixty-six thousand, six hundred twenty".