52105780 has 12 divisors (see below), whose sum is σ = 109422180. Its totient is φ = 20842304.

The previous prime is 52105777. The next prime is 52105811. The reversal of 52105780 is 8750125.

It can be written as a sum of positive squares in 2 ways, for example, as 9412624 + 42693156 = 3068^2 + 6534^2 .

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, 1302625 + ... + 1302664.

It is an arithmetic number, because the mean of its divisors is an integer number (9118515).

Almost surely, 2^52105780 is an apocalyptic number.

It is an amenable number.

52105780 is an abundant number, since it is smaller than the sum of its proper divisors (57316400).

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

52105780 is a wasteful number, since it uses less digits than its factorization.

52105780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2605298 (or 2605296 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 28.

The square root of 52105780 is about 7218.4333480334. The cubic root of 52105780 is about 373.5040372270.

The spelling of 52105780 in words is "fifty-two million, one hundred five thousand, seven hundred eighty".