52778285 has 32 divisors (see below), whose sum is σ = 77448960. Its totient is φ = 33702912.

The previous prime is 52778269. The next prime is 52778287. The reversal of 52778285 is 58287725.

52778285 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 52778285 - 2⁴ = 52778269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52778287) 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 31 ways as a sum of consecutive naturals, for example, 63251 + ... + 64079.

It is an arithmetic number, because the mean of its divisors is an integer number (2420280).

Almost surely, 2^52778285 is an apocalyptic number.

It is an amenable number.

52778285 is a deficient number, since it is larger than the sum of its proper divisors (24670675).

52778285 is a wasteful number, since it uses less digits than its factorization.

52778285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 965.

The product of its digits is 313600, while the sum is 44.

The square root of 52778285 is about 7264.8664819114. The cubic root of 52778285 is about 375.1040540876.

The spelling of 52778285 in words is "fifty-two million, seven hundred seventy-eight thousand, two hundred eighty-five".