52660820 has 12 divisors (see below), whose sum is σ = 110587764. Its totient is φ = 21064320.

The previous prime is 52660793. The next prime is 52660831. The reversal of 52660820 is 2806625.

It can be written as a sum of positive squares in 2 ways, for example, as 26915344 + 25745476 = 5188^2 + 5074^2 .

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 1316501 + ... + 1316540.

It is an arithmetic number, because the mean of its divisors is an integer number (9215647).

Almost surely, 2^52660820 is an apocalyptic number.

It is an amenable number.

52660820 is an abundant number, since it is smaller than the sum of its proper divisors (57926944).

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

52660820 is a wasteful number, since it uses less digits than its factorization.

52660820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2633050 (or 2633048 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 52660820 is about 7256.7775217379. Note that the first 3 decimals coincide. The cubic root of 52660820 is about 374.8255662810.

The spelling of 52660820 in words is "fifty-two million, six hundred sixty thousand, eight hundred twenty".