52778780 has 48 divisors (see below), whose sum is σ = 113400000. Its totient is φ = 20630016.

The previous prime is 52778743. The next prime is 52778783. The reversal of 52778780 is 8787725.

52778780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52778783) 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 15 ways as a sum of consecutive naturals, for example, 265121 + ... + 265319.

It is an arithmetic number, because the mean of its divisors is an integer number (2362500).

Almost surely, 2^52778780 is an apocalyptic number.

It is an amenable number.

52778780 is an abundant number, since it is smaller than the sum of its proper divisors (60621220).

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

52778780 is a wasteful number, since it uses less digits than its factorization.

52778780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446 (or 444 counting only the distinct ones).

The product of its (nonzero) digits is 219520, while the sum is 44.

The square root of 52778780 is about 7264.9005499043. The cubic root of 52778780 is about 375.1052267664.

The spelling of 52778780 in words is "fifty-two million, seven hundred seventy-eight thousand, seven hundred eighty".