52420660 has 12 divisors (see below), whose sum is σ = 110083428. Its totient is φ = 20968256.

The previous prime is 52420631. The next prime is 52420663. The reversal of 52420660 is 6602425.

52420660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 29877156 + 22543504 = 5466^2 + 4748^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52420663) 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 3 ways as a sum of consecutive naturals, for example, 1310497 + ... + 1310536.

It is an arithmetic number, because the mean of its divisors is an integer number (9173619).

Almost surely, 2^52420660 is an apocalyptic number.

It is an amenable number.

52420660 is an abundant number, since it is smaller than the sum of its proper divisors (57662768).

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

52420660 is a wasteful number, since it uses less digits than its factorization.

52420660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2621042 (or 2621040 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 52420660 is about 7240.2113228828. The cubic root of 52420660 is about 374.2548997749.

The spelling of 52420660 in words is "fifty-two million, four hundred twenty thousand, six hundred sixty".